Difference Between Potentiometer and Voltmeter – Current Electricity || Class 12, JEE & NEET

The Potentiometer and the Voltmeter both are the voltage measuring devices. The main Difference Between Potentiometer and Voltmeteris that the potentiometer measures the emf of the circuit whereas voltmeter measures the end terminal voltage of the circuit. The other differences between the Potentiometer and the voltmeter are explained below in the comparison chart.

  1. Standardization of Potentiometer
  2. Key Differences

Comparison Chart

Difference between Potentiometer and Ammeter

Browse More Topics Related to Potentiometer:

Standardization of Potentiometer

The process of determination of potential gradient on wire of potentiometer is known as standardisation of potentiometer. A standard cell is one whose emf remains constant. Cadmium cell with emf 1.0186 V at $20^{\circ}$C is used as a standard cell. In laboratory a Daniel cell with emf 1.08 V is usually used as a standard cell.

standardization of Patentiometer
If $\ell_{0}$ is the balancing length for standard emf $E_{0}$ then potential gradient $x=\frac{E_{0}}{l_{0}}$

Standardization of Potentiometer

Key Differences:

The following are the key differences between Potentiometer and voltmeter.

  1. The Potentiometer is an instrument used for measuring the emf, whereas the voltmeter is a type of meter which measures the terminal voltage of the circuit.
  2. The Potentiometer accurately measures the potential difference because of zero internal resistance. Whereas, the voltmeter has a high internal resistance which causes the error in measurement. Thus the voltmeter approximately measures the voltage.
  3. The sensitivity of the Potentiometer is very high, i.e. it can measure small potential differences between the two points. The voltmeter has low sensitivity.
  4. The Potentiometer uses the null deflection type instrument whereas the voltmeter uses the deflection type instrument.
  5. The Potentiometer has infinite internal resistance, whereas the Potentiometer has high measurable resistance.

Watch out the Video: Applications of Potentiometer & its Construction by Saransh Sir.

Conclusion

The Potentiometer and voltmeter both measures the emf in volts. The Potentiometer is used in a circuit where the accurate value of voltage is required. For approximate calculation, the voltmeter is used.

 

Physics Revision Series by Saransh Sir (AIR 41 in IIT-JEE)

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JEE Main April 2020 Application Form
JEE Main April 2020 Application Form (7 February, 2020) | Important Details Check Here

JEE Main April 2020 Application form filling process is starting from 7th February, 2020. The last date to apply online for JEE Main April 2020 is March 12.

The application process of JEE Main 2020 includes registration, filling the application form, uploading scanned images, payment of application fee and taking the printout of the filled-in form. For JEE Main 2020 registration, candidates must check the eligibility criteria as prescribed by the NTA. Candidates who have missed the JEE Main 2020 January exam can appear for the JEE Main 2020 April session.

About JEE Main 2020 Exam:

Joint Entrance Examination is organized by National Testing Agency to offer admission into courses like B.Tech / B.E., B.Arch, B.Plan. JEE Main is a computer based test that takes place at national level. The duration of the exam is 3 hours. It consists of multiple-choice questions and numerical value type questions. There is negative marking in the case of multiple choice questions. After qualifying this exam, the candidates can take admission in IIITs / CFTIs / NITs or can sit for JEE Advance exam.

JEE Main April 2020 Exam Application Form

List of Documents Required for Filling Application Form

Candidate needs some documents to fill and submit the application form. Check the list of required documents here:

  • scanned image of photograph
  • scanned image of signature
  • a valid e-mail id
  • valid and active mobile number
  • past academic mark sheets and certificates

The candidates have to upload Photo and Signatue in the application form of JEE Main 2020 and as per the given specifications:

Scanned image Format Size Remarks
Photo JPG/JPEG 10 kb–200 kb Colored or black/white
(but clear contrast)
Signature JPG/JPEG 4 kb–30 kb Must be in Running hand

 

JEE Main April 2020 Important Points

Registration Process will be different for those who applied in January and for those haven’t applied in January JEE Main Exam.
If you have applied in JEE Main January 2020: No need to register. You can directly login with the same credentials and fill the application form for JEE Main April attempt.

If you haven’t applied in January 2020 JEE Main Exam: Then you have to fill the application form. First you need to register and then fill the correct details in the form, upload images in the application form & pay the application fee.

JEE Main April 2020 Exam Pattern

As per the eligibility criteria for, a few changes in the pattern of the question paper(s) and number of question(s) for B.E./B.Tech has been approved by the JEE Apex Board (JAB) for the conduct of JEE (Main)-2020 Examination.

 

Paper Subject with Number of Questions Type of Questions TIMING OF THE EXAMINATION(IST)
B.tech Mathematics – 25(20+5)

Physics – 25(20+5)

Chemistry – 25(20+5)

20 Objective Type – Multiple Choice Questions (MCQs) & 5 Questions with answer as numerical value, with equal weightage to Mathematics, Physics & Chemistry 1st Shift: 09:30 a.m. to 12:30 p.m.

2nd Shift: 02:30 p.m. to 05:30 p.m.

Click Here to predict your JEE Main January 2020 Rank

IMPORTANT DATES FOR JEE Main 2020 – April Exam

JEE Main 2020 Important Dates – April Session

EVENTS

JEE Main 2020 Dates

Application form availability February 7, 2020
Last date to apply March 12, 2020 (Extended)
Last date to upload images and pay application fee March 12, 2020
Correction in Particulars (last date)
March 16, 2020
Exam date Updated SOON
Release date of answer key and recorded responses Second week of April, 2020
Release of answer key Last week of April, 2020: Paper 1
Second week of May, 2020: Paper 2 & 3
Declaration of result April 30, 2020
Announcement of NTA score Third week of May, 2020

 

Eligibility Criteria

There is no age limit for the candidates to appear in JEE Main 2020 Examination. The candidates who have passed their 12th Examination in 2018, 2019 and appearing in 2020 are eligible to JEE Main Examination 2020.

Those candidates who cleared the class 12 exam in 2017 or before 2017 are not eligible to appear for JEE Main 2020 exam.

Educational Qualification

Candidates must have at least 5 subjects in class 12 exam or equivalent exam. Where Math, Physics and Chemistry are the essential subjects.

CLICK HERE TO APPLY FOR JEE MAIN APRIL 2020

INFORMATION BULLETIN for JEE MAIN April 2020

NTA (National Testing Agency) publishes Information Bulletin for JEE MAIN April 2020 in PDF Form. Candidates can download JEE Main 2020 brochure in English and Hindi are available.

The JEE Main 2020 information brochure is that document which provides complete details of the Joint Entrance Examination (Main), officially provided by the exam conducting body NTA. It is recommended to read it first and then apply for the exam.

JEE Main April 2020 Information Bulletin in Hindi DOWNLOAD PDF
JEE Main April 2020 Information Bulletin in English DOWNLOAD PDF

 

JEE Main 2020 Detailed Syllabus

 

If you want to improve %ile for JEE Main April 2020, then Join BOUNCE BACK CRASH COURSE FOR JEE 2020. Register Here!!!

For Details about Bounce Back Crash Course for JEE, Click Here.

 

FREE Revision Series For JEE 2020 | Quick Revision Videos 

👉Physics Revision Series

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👉Mathematics Revision Series

 

Mind Map For Hydrocarbons: Alkenes | Class 11, JEE & NEET – Download from here

Get to learn all important points and reactions of Hydrocarbons – Alkene through these mind maps. Download and share with your friends also.

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Hydrocarbons Alkene

 

 

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Mind Maps for Rotational Motion: Torque Revision Class XI, JEE, NEET

Rotational Motion Class 11 comprises variety of cases with important formulae and key points. So here is the mind map to help you in remembering all the key formulae and important concepts on finger tips.

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NTA NEET 2020 Application Form
NTA NEET 2020 Application Form (Open Again) | Admit Card, Exam Date, Pattern, Syllabus & Preparation

NTA NEET Registration 2020 re-opened for all the candidates. Although the correction window of NEET 2020 was closed on January 31, 2020, the National Testing Agency, NTA has released a notification inviting all the aspirants for applications. NTA has reopened the application form portal for candidates who have completed Step I of the application process and registered themselves for NEET 2020. Those who registered for the exam, can now fill details, upload images, or pay application fee in the form. This can be done between February 03 to 09, 2020.

NEET Exam is due to be held on May 03, 2020 and admit card is releasing on March 27, 2020. The following image depicts the official notice released by the NTA:

 

👉Free Video Lectures & Study Material for NEET 2020 Preparation

 

Although the correction window of NTA NEET 2020 Application Form was closed on January 31, 2020, the National Testing Agency, NTA has released a notification inviting all the aspirants for applications. Therefore, candidates who failed to meet the deadline previously now have a chance to fill the application. The process of application is the same.

👉 How to Fill NEET 2020 Application Form?

👉 Eligibility Criteria

👉 Exam Pattern NEET 2020

👉 Detailed Syllabus 

Who Can Apply?

Students who have had registered themselves between December 2, 2019, and January 6, 2020, can only apply.

Application FEE

Candidates from the general category have to pay an INR 1500 fee, EWS/OBC category candidates have to pay INR 1400 and SC/ST/Transgender candidates have to pay INR 800.  Only applicants who have submitted their applicants forms correctly will receive their NEET Admit Cards on March 27, 2020.

 

Documents Required for NTA NEET 2020 Application Form

The following documents are required for the process of NEET Registration:

  1. 10th class mark sheet
  2. 12th class mark sheet
  3. Scanned copy of candidate’s passport-sized photograph
  4. Scanned copy of candidate’s signature
  5. Scanned copy of postcard size photograph
  6. Scanned copy of left-hand thumb impression
  7. Valid ID proof

NTA NEET 2020 Application Form Requirements

  • The scanned image of the passport size photograph of the candidate should be in JPG/JPEG format and Image size should be between 10Kb to 200Kb
  • The scanned image of the signature of the candidate should be in JPG/JPEG format and Image size should be between 4Kb to 30Kb
  • The scanned image of left-hand thumb impression of the candidate should be in JPG format and Image size should be between 10Kb to 50Kb The Scanned image of Class 10th Certificate of the candidate should be in JPG format and Image size should be between 100Kb to 300Kb
  • The scanned image of postcard size photograph of the candidate should be in JPG format and Image size should be between 50Kb to 300Kb.

 

NEET 2020 Admit Card

  • Admit Cards for NEET 2020 shall be released online on March 27, 2020. Candidates can download it from login by entering application number and password. If candidates are unable to download the admit card or if there is error in it, then they need to inform NTA regarding the same between March 27 to April 10, 2020 via helpline number between 10.00 am to 5.00 pm. NTA will take measures to rectify the records later, meanwhile, the candidate can appear in the exam with the already downloaded admit card.
  • A candidate will not be allowed to enter the exam center without NEET 2020 Admit Card.
  • Candidates should know that NEET Admit cards will not be sent to the candidates via post, and will only be available in online mode.
  • NEET 2020 admit card will contain details like candidate’s name, exam date, time, exam center details, candidate’s DOB etc.
On the exam day, candidates have to carry Print out of the Admit Card along with:
  • 1 passport size photograph.
  • 1 valid photo id proof, in original.
  • PwD certificate (if applicable).
  • 1 post card size color photograph – it is to be pasted in the proforma and should be the same as that uploaded in the application form.

👉 FAQ’s (Frequently Asked Question’s) on NEET 2020

 

Click to Register & Get Free Mock Tests for NEET 2020

 

NEET 2020 is scheduled for May 3, 2020 in 155 cities throughout India. Here are some Important Links given below regarding NEET 2020.

 

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Important Formulas of Maths Class 10 | NCERT Chapter 1 to 5 | Download Mind Map

Mind Map covering Important Formulas of Maths Class 10 will help you to learn all the important and key formulae on Fingertips.

The given Mind Map covering Following Chapters from Class 10 NCERT:

  • Real Numbers
  • Polynomial
  • Linear Equations in Two Variables
  • Quadratic Equation
  • Arithmetic Progression

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Important Formulas of Maths Class 10

 

 

Here is the complete revision for Chapter 1-5 of Mathematics Class 10. Watch out the video and Revise five chapters in 1 Shot!!!!

 

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JEE Main 2020 postponed to May Last Week, Admit Card after April 15

JEE Main 2020 postponed to May Last Week due to Corona outbreak. The National Testing Agency (NTA) has released a notification regarding the postponement of the JEE Main 2020 April session on March 31. In an official circular dated March 31, the NTA said the JEE Main April 2020 examination, which was scheduled to be held on April 5, 7, 8, and 11, has now been pushed off to the last week of May 2020.

The exam conducting authority will announce the exact dates on the official website of JEE Main. The notification released by Director General NTA stated that , the admit card for the JEE Mains 2020 will be released after April 15, 2020 depending upon the situation. To keep track of the regular updates, all candidates are requested to check the official website.

Here is the Official Notification by NTA regarding Admit Card of JEE Main 2020.

JEE Main 2020 postponed

Through JEE Main entrance exam, students will be able to get admission to BE/B.tech, B.Plan, and B.Arch degree courses at the various IITs (Indian Institute of Information Technology), NITs (National Institute of Technology) and other Centrally Funded Technical Institutions (CFTIs) across India.

Click Here for January JEE Main 2020 Exam Paper Analysis

 

JEE Main 2020 Exam Pattern

As per the eligibility criteria for, a few changes in the pattern of the question paper(s) and number of question(s) for B.E./B.Tech has been approved by the JEE Apex Board (JAB) for the conduct of JEE (Main)-2020 Examination.

 

Paper Subject with Number of Questions Type of Questions TIMING OF THE EXAMINATION(IST)
B.tech Mathematics – 25(20+5)

Physics – 25(20+5)

Chemistry – 25(20+5)

20 Objective Type – Multiple Choice Questions (MCQs) & 5 Questions with answer as numerical value, with equal weightage to Mathematics, Physics & Chemistry 1st Shift: 09:30 a.m. to 12:30 p.m.

2nd Shift: 02:30 p.m. to 05:30 p.m.

 

There is no age limit for the candidates to appear in JEE Main 2020 Examination. The candidates who have passed their 12th Examination in 2018, 2019 and appearing in 2020 are eligible to JEE Main Examination 2020.

Those candidates who cleared the class 12 exam in 2017 or before 2017 are not eligible to appear for JEE Main 2020 exam.

 

JEE Main 2020 Syllabus

 

Quick Revision Videos

👉Physics Revision Series by Saransh Gupta Sir (AIR-41) 

 


 

CBSE Admit Card 2020
CBSE Admit Card 2020 for Class 10th & 12th (Released) | Download Exam Hall Ticket

Hello Students!!! So now the long wait is over. Central Board of Secondary Education, New Delhi has released the Hall Tickets(Exam Admit Cards) for the class 10 and 12 Board exams on its official website. Students can visit the official website and download the admit card online at www.cbse.nic.in. CBSE Admit Card 2020 are now Available on Official Website.

As per the CBSE schedule, CBSE board examination will begin on February 15, 2020. CBSE board exams for class 10 main subjects will be conducted from February 26 to March 18, 2020. The CBSE class 12 board examinations will start on February 22 and will end on March 30, 2020.

CLICK TO DOWNLOAD CBSE 2020 ADMIT CARD

How to download the admit card:

1.Visit the official website

2.On the home page, click on the link that reads, ‘Admit Card And School LOC for Board Examination 2020’

3.A new page will appear on the display screen

Login CBSE Admit card 2020

4.Key in your credentials and log in

5.The admit cards will appear on the display screen.

Around a month is left for your board exams. So don’t waste your valuable time and start your board exam preparation with complete dedication. All the best to all the students who are appearing in CBSE Board Exam 2020. Here are some of the effective preparation tips for Board Exams:

Plan your Study Timings

The date sheet for CBSE Class 10th & 12th exams have been issued. So, students should create a decent study schedule as per the exam time table. Cover the syllabus of those subjects that will be held in February 2020.

Make Short Notes to save time in revision

While studying, students should create short notes so that they can reread the important formulas. Besides, students can carry these notes anywhere and everywhere to make the revision task less hectic.

Solve Sample Papers & Previous Year Question Papers:

CBSE Board has released the latest sample papers for Class 10 & 12. CBSE Class 10 sample papers are designed as per the latest exam pattern and syllabus. Students should start solving the CBSE Class 12 sample papers for better exam preparation. Also

Click Here for Class X CBSE Sample Papers PDF

Click Here for Class XII CBSE Sample Papers PDF

 

 

 

CBSE Class 10 Science Practical Sample Papers

Every years CBSE conducts practical exams for the Class X students so eSaral, in this article providing here CBSE Class 10 Science Practical Sample Papers to help all students so that students can understand the exam pattern and prepare accordingly.

Students need not to panic much about the practicals just practice and revise thoroughly. Find the links below to download and study CBSE Class 10 science practical sample papers in PDF format.

Sample Paper 1 – DOWNLOAD PDF 

Sample Paper 2- DOWNLOAD PDF

Sample Paper 3- DOWNLOAD PDF

All the best from eSaral Team for the practical exams. As our focus is to help and develop the students, we are also providing the test series for Class X CBSE BOARD EXAMS so that student can practice well and get familiar with the pattern of the exam and develop their own strategies before the actual board exams.

With these Papers you can also watch the video related to CLass 10 Science practicals. The strategy, tips and tricks are explained by eSaral.

Watch the video for CBSE Class 10 Science Practical Exam NOW

Find the link here for the test series for Class X by eSaral- eSaral Test Series Class 10

Watch the video to Score 90%+ in CBSE Class X

All the best and enjoy the simplified learning process with eSaral.

Question papers JEE main 2020
JEE MAIN 2020 Question Paper PDF Download | All Shifts (7th, 8th & 9th January)

NTA has successfully conducted JEE Main Jan 2020 exam in all the test centers and we understand that students are waiting for JEE MAIN 2020 Question Paper PDF format. Based on the reviews by the students, it is concluded that the exam is comparatively easy than the previous year. Furthermore, the questions asked in the exam were more conceptual based. So Question Papers PDF of all shifts are available here to download.

JEE Main 2020 Question Paper – Candidates can download JEE Main question paper for January 07, 08, 09, 2020, for Shift 1 and Shift 2 from this page.

 

S. No.  JEE Main 2020 (January) Shifts Question Papers
1.        January 7, 2020 Shift-1  Download PDF
2.        January 7, 2020 Shift-2 Download PDF
3.        January 8, 2020 Shift-1 Download PDF
4.        January 8, 2020 Shift-2 Download PDF
5.        January 9, 2020 Shift-1 Download PDF
6.        January 9, 2020 Shift-2 Download PDF

 

Click Here for January JEE Main 2020 Exam Paper Analysis

 

The candidates can challenge the answer keys online. The window to raise objections will be available for a week. In case, the NTA finds the objections raised are incorrect, they will publish the result of JEE Main. The tentative result declaration date is by January 31.

Candidates may check their JEE Main question papers from Here!!!

 

 

PHYSICS SYLLABUS CLASS 12
CBSE Class 12 Physics Syllabus 2019-20 | Download Detailed Syllabus

Here in this article the students can find the detailed CBSE Class 12 Physics Syllabus 2019-20. Each chapter is described topic wise. Students should follow this and prepare according to it for the exams.

 

CHAPTER                                                                                                                                  TOPICS
Chapter–1 Electric Charges and Fields

  • Electric Charges
  • Conservation of charge, Coulomb’s law-force between two point charges
  • Forces between multiple charges superposition principle and continuous charge distribution.
  • Electric field
  • Electric field due to a point charge, electric field lines, electric dipole, electric field due to a dipole, torque on a dipole in uniform electric fleld.
  • Electric flux, statement of Gauss’s theorem and its applications to find field due to infinitely long straight wire uniformly charged infinite plane sheet and uniformly charged thin spherical shell (field inside and outside).
Chapter–2 Electrostatic Potential and Capacitance

  • Electric potential, potential difference, electric potential due to a point charge,
  • A dipole and system of charges
  • Equipotential surfaces, electrical potential energy of a system of two point charges and of electric dipole in an electrostatic field.
  • Conductors and insulators, free charges and bound charges inside a conductor.
  • Dielectrics and electric polarisation, capacitors and capacitance
  • Combination of capacitors in series and in parallel, capacitance of a parallel plate capacitor with and without dielectric medium between the plates
  • Energy stored in a capacitor.
Chapter–3 Current Electricity

  • Electric current, flow of electric charges in a metallic conductor, drift velocity

mobility and their relation with electric current; Ohm’s law electrical resistance

  • V-I characteristics (linear and non-linear), electrical energy and

power, electrical resistivity and conductivity

  • Carbon resistors, colour code for carbon resistors
  • Series and parallel combinations of resistors
  • Temperature dependence of resistance.
  • Internal resistance of a cell, potential difference and emf of a cell
  • Combination of cells in series and in parallel
  • Kirchhoff’s laws and simple applications
  • Wheatstone bridge, metre bridge
  • Potentiometer – principle and its applications to measure potential difference and for comparing EMF of two cells; measurement of internal resistance of a cell
Chapter–4 Moving Charges and Magnetism

  • Concept of magnetic field, Oersted’s experiment
  • Biot – Savart law and its application to current carrying circular loop
  • Ampere’s law and its applications to infinitely long straight wire
  • Straight and toroidal solenoids (only qualitative treatment)
  • Force on a moving charge in uniform magnetic and electric fields, Cyclotron
  • Force on a current-carrying conductor in a uniform magnetic field
  • Force between two parallel current-carrying conductors-definition of ampere
  • Torque experienced by a current loop in uniform magnetic field
  • Moving coil galvanometer-its current sensitivity and conversion to ammeter and voltmeter
Chapter–5 Magnetism and Matter

  • Current loop as a magnetic dipole and its magnetic dipole moment
  • Magnetic dipole moment of a revolving electron
  • Magnetic field intensity due to a magnetic dipole (bar magnet) along its axis and perpendicular to its axis
  • Torque on a magnetic dipole (bar magnet) in a uniform magnetic field
  • Bar magnet as an equivalent solenoid, magnetic field lines; earth’s magnetic field and magnetic elements
  • Para-, dia- and ferro – magnetic substances, with examples
  • Electromagnets and factors affecting their strengths, permanent magnets
Chapter–6 Electromagnetic Induction

  • Electromagnetic induction
  • Faraday’s laws
  • induced EMF and current
  • Lenz’s Law
  • Eddy currents
  • Self and mutual induction
Chapter–7 Alternating Current

  • Alternating currents
  • Peak and RMS value of alternating current/voltage
  • Reactance and impedance
  • LC oscillations (qualitative treatment only)
  • LCR series circuit, resonance; power in AC circuits, power factor, wattless current
  • AC generator and transformer
Chapter–8 Electromagnetic Waves

  • Basic idea of displacement current
  • Electromagnetic waves, their characteristics, their Transverse nature (qualitative ideas only)
  • Electromagnetic spectrum (radio waves, microwaves, infrared, visible,

ultraviolet, X-rays, gamma rays) including elementary facts about their uses

Chapter–9 Ray Optics and Optical Instruments

  • Ray Optics: Reflection of light, spherical mirrors, mirror formula, refraction of light, total internal reflection and its applications, optical fibers, refraction at spherical surfaces, lenses, thin lens formula, lensmaker’s formula, magnification, power of a lens, combination of thin lenses in contact, refraction of light through a prism
  • Scattering of light – blue colour of sky and reddish appearance of the sun at sunrise and sunset
  • Optical instruments: Microscopes and astronomical telescopes (reflecting and refracting) and their magnifying powers
Chapter-10 Wave Optics

  • Wave front and Huygen’s principle, reflection and refraction of plane wave at a plane surface using wave fronts
  • Proof of laws of reflection and refraction using Huygen’s principle
  • Interference, Young’s double slit experiment and expression for fringe width
  • Coherent sources and sustained interference of light
  • Diffraction due to a single slit, width of central maximum
  • Resolving power of microscope and astronomical telescope
  • Polarisation,
  • Plane polarised light
  • Brewster’s law, uses of plane polarised light and Polaroids
Chapter–11 Dual Nature of Radiation and Matter

  • Dual nature of radiation
  • Photoelectric effect
  • Hertz and Lenard’s observations
  • Einstein’s photoelectric equation-particle nature of light
  • Matter waves-wave nature of particles, de-Broglie relation
  • Davisson-Germer experiment (experimental details should be omitted; only conclusion should be

explained)

Chapter–12 Atoms

  • Alpha-particle scattering experiment
  • Rutherford’s model of atom
  • Bohr model,
  • Energy levels, hydrogen spectrum
Chapter–13 Nuclei

  • Composition and size of nucleus
  • Radioactivity, alpha, beta and gamma particles/rays and their properties; radioactive decay law
  • Mass-energy relation, mass defect; binding energy per nucleon and its

variation with mass number; nuclear fission, nuclear fusion

Chapter–14 Semiconductor Electronics: Materials, Devices and Simple

Circuits

  • Energy bands in conductors, semiconductors and insulators (qualitative ideas

only)

  • Semiconductor diode – I-V characteristics in forward and reverse bias, diode as

a rectifier

  • Special purpose p-n junction diodes: LED, photodiode, solar cell and Zener diode and their characteristics, zener diode as a voltage regulator

 

 

DOWNLOAD eSaral APP for JEE & NEET Preparation. Get Free video lectures, tests, practice questions designed by Top IITian Faculties of Kota.

 

Class 12 PHYSICS Complete Notes

 

Class 12 CHEMISTRY Complete Notes

 

Class 12 MATHEMATICS Complete Notes

 

CBSE Class 12 Syllabus of all subjects
Class 12 CBSE Syllabus 2019-20 for All Subjects | CBSE Exam Pattern | Chapter-wise Marks Distribution

Every year CBSE conducts board examination for class 10th and 12th. Class 12 CBSE Syllabus 2019-20 is released by Central Board of Secondary Education. But Class 12th Exam Pattern has been changed and the new pattern and marking scheme is introduced for the session 2019-20. So in this article get to know the changes for CBSE CLASS 12TH Exam Pattern with the marking scheme and syllabus.

CBSE Exam Pattern of Class 12

 

Internal Assessment Earlier the internal assessment was not considered for all subjects. But in March 2020 exams, it is mandatory for all the subjects. From now 25% marks are allotted as internal assessments [20 out of 100]. So from March 2020 exams, the final exams will be conducted for 80 marks. However, some fine arts and science stream subjects will follow the same ratio of 70-30.
Multiple Choice/Objective Type Questions Recently MCQs or objective type questions are included in all the exams. CBSE will ask 25% of the questions as MCQs. So it is clear that at least 20 marks in each exam are covered by these objective type questions. Rest marks will be covered by the subjective and theory questions.
Choice in Questions As per the trend of 2019, CBSE will give option for choice to the students in 33% of the questions.

 

So, here is the Class 12 CBSE Syllabus 2019-20 for All Subjects with Unit wise weightage:

CBSE Class 12 Physics Syllabus 2020 with Unit Wise Weightage

Marking
Unit–I Electrostatics 16
Chapter–1: Electric Charges and Fields
Chapter–2: Electrostatic Potential and
Unit-II Current Electricity
Chapter–3: Current Electricity
Unit-III Magnetic Effects of Current and Magnetism 17
Chapter–4: Moving Charges and Magnetism
Chapter–5: Magnetism and Matter
Unit-IV Electromagnetic Induction and Alternating

Currents

Chapter–6: Electromagnetic Induction
Chapter–7: Alternating Current
Unit–V Electromagnetic Waves 18
Chapter–8: Electromagnetic Waves
Unit–VI Optics
Chapter–9: Ray Optics and Optical Instruments
Chapter–10: Wave Optics
Unit–VII Dual Nature of Radiation and Matter 12
Chapter–11: Dual Nature of Radiation and

Matter

Unit–VIII Atoms and Nuclei
Chapter–12: Atoms
Chapter–13: Nuclei
Unit–IX Electronic Devices  

7

Chapter–14: Semiconductor Electronics:

Materials, Devices and Simple Circuits

TOTAL MARKS 70

 

CLICK HERE FOR THE DETAILED SYLLABUS OF PHYSICS CLASS 12

CBSE Class 12 Chemistry Syllabus 2020 with Unit Wise Weightage

 

 

Unit No.

 

Title

 

Marks

 

Unit I

 

Solutions

 

 

 

23

 

Unit II

 

Electrochemistry

 

Unit III

 

Chemical Kinetics

 

Unit IV

 

Surface Chemistry

 

Unit V

 

General Principles and Processes of Isolation of Elements

 

 

 

 

 

19

 

Unit VI

 

p -Block Elements

 

Unit VI

 

d -and f -Block Elements

 

Unit VII

 

Coordination Compounds

 

Unit VIII

 

Haloalkanes and Haloarenes

 

 

 

 

 

 

28

 

Unit IX

 

Alcohols, Phenols and Ethers

 

Unit X

 

Aldehydes, Ketones and Carboxylic Acids

 

Unit XI

 

Organic Compounds containing Nitrogen

 

Unit XII

 

Biomolecules

 

Unit XIII

 

Polymers

 

Unit XIV

 

Chemistry in Everyday Life

 

Total

 

70

 

CBSE Class 12 Mathematics Syllabus 2020 with Unit Wise Weightage

No. Units Marks
I. Relations and Functions 08
II. Algebra  

10

III. Calculus  

35

IV. Vectors and Three – Dimensional Geometry  

14

V. Linear Programming  

05

VI. Probability  

08

Total  

80

Internal Assessment  

20

 

CLICK HERE FOR THE DETAILED SYLLABUS OF MATHEMATICS CLASS 12

 

CBSE Class 12 Biology Syllabus 2020 with Unit Wise Weightage

 

Unit Title Marks
VI Reproduction 14
VII Genetics and Evolution 18
VIII Biology and Human Welfare 14
IX Biotechnology and its Applications 10
X Ecology and Environment 14
Total 70

 

 CLICK HERE FOR THE DETAILED SYLLABUS OF BIOLOGY CLASS 12

CBSE Class 12 English Syllabus 2020 with Unit Wise Weightage

Typology Testing

Competencies

Objective Type Question including MCQs(1 mark each) Short Answer Questio ns

(2 marks each)

Short Answer Question (4 marks each) Long Answer Question

120150

words

(6 marks each)

Very Long Answer Question

150200

words (HOTS) (10 marks each)

Total marks
Comprehension Conceptual understanding, decoding, Analyzing, inferring, interpreting, appreciating, literary, conventions and vocabulary, summarizing and using appropriate format/s  

 

 

 

MCQ = 5

Objective Type Questions

= 7

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

Writing Skills Reasoning, appropriacy of style and tone, using appropriate format and fluency, inference, analysis, evaluation and creativity  

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

1

 

 

 

 

2

 

 

 

 

30

Literature Textbooks  and Supplementary Reading Text Recalling, reasoning, appreciating literary convention, inference, analysis, creativity

with fluency

8

Objective Type Questions (4 from1 prose and

4 from 1 poetry extract)

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

30

 

TOTAL

 

1×20=20

 

2×5=10

 

4×3=12

 

6×3=18

 

10×2=20

 

80

Assessment                      of Listening                      and Speaking Skills  

 

 

 

 

 

 

 

 

 

 

 

20

GRAND TOTAL 100

 

CBSE Class 12 Physical Education Syllabus 2020

 

DOWNLOAD eSaral APP for JEE & NEET Preparation. Get Free video lectures, tests, practice questions designed by Top IITian Faculties of Kota.

 

Class 12 PHYSICS Complete Notes

 

Class 12 CHEMISTRY Complete Notes

 

Class 12 MATHEMATICS Complete Notes

 

How to Prepare for 10th Board Exams in 1 month | Tips and Strategy to score more than 90%

Last minute revision can be very effective to perform outstanding in Board Exams as it will help to recall all your learning and retain the important information. Most of you are enquiring on How to Prepare for 10th Board Exams in 1 month. To help all class 10 students shed off their exam related stress and revise their syllabus effectively, we bring here some important tips shared by the experienced teacher of eSaral. Strategy shared in this video by Ayushi Ma’am will help you polish your preparations in the last one month of Board Exams. If you follow the given tips rigorously, you can be prepared well for your 10th board exams, even with less time left before the examination starts. 10th board is an important milestone in your life. Therefore, you must make it certain to leave no stone unturned to make yourself and your parents proud. At the same time, also take care of your health!
Best of Luck!!!

 

 

ALL THE BEST STUDENTS!!!

 

DOWNLOAD eSaral App for Class X | IIT-JEE | NEET for free Video tutorials and study material.

oday on 7th January 2020, it was the day, when JEE MAIN was held in the morning shift from 9:30-12:30 across India.JEE MAin 2020 Exam Analysis 
JEE Main 2020 Exam | January Attempt | Students’ Reactions and Reviews

JEE MAIN 2020 Students Reactions | 7th January (SHIFT-1)

JEE MAIN, one of the biggest examination in the country was scheduled today. The difficulty level and selection ratio are the well-known aspects of this exam but the number of candidates that appear every year, is also the factor that makes it so special. Every year more than ten lakhs of aspirants apply and compete for just only 30-35 thousand seats (approximately) of National Institute of Technologies and IIITs. Today on 7th January 2020, it was the day, when JEE Main 2020 Exam was held in the morning shift from 9:30-12:30 across India.

Many of you are also appeared or going to appear in near future and want to know the overall level of today’s exam. So, dedicated to students and in order to help them, eSaral is again here, providing you the details about today’s exam. In this video, our team members have gathered the information about the questions, paper pattern and the difficulty level of the exam. We went to some of the centers in KOTA city, yes!! The coaching city.

Get to know about the students reviews and reactions regarding JEE Main 2020 Exam:

 

So, watch the video to know how they feel about the exam. We asked them regarding the easy to tough subjects based on the questions and topics, also the marking scheme of the numerical type questions and the ratio of 11th and 12th standards topics in the exam.

So if you have these kind of doubts or want to know about the detail watch the video and based on the conversation with the aspirants we developed a PDF too. You can download the same to know in detail.

Here is the complete analysis of JEE Main 2020, 7th Jan SHIFT-1 Exam by Saransh Gupta Sir with Students who have appeared in Exam.

 

JEE MAIN 2020 Students Reactions | 7th January (SHIFT-2)

 

So, here are the students reviews on the Second shift of 7th January JEE Main Exam. As per the students reviews it can be concluded that both shifts of the day comprised of easy to moderate level questions. Watch out the video and comment your review of JEE Main Exam

 

JEE MAIN 2020 Students Reactions | 8th January (SHIFT-1)

 

 

JEE MAIN 2020 Students Reactions | 8th January (SHIFT-2)

 

JEE main 2020 paper analysis
JEE Main 2020 Paper Analysis | Discussion with Students

JEE MAIN 2020 Paper Analysis for 7th January SHIFT-1

Today on 7th January, the national level competition exam JEE MAIN was held across the nation and with the completion of the exam, there are many queries in the mind of aspirants. It is natural to feel a certain kind of anxiety after the exam like how others feel, the difficulty level of the exam and the expected cut-offs. Here, at eSaral we are providing you the first detailed analysis that is available to all the students. Watch the video to now about the questions’ level (according to eSaral students) and the topics wise questions from 11th and 12th standards.

The physics faculty at eSaral, Saransh Gupta sir and chemistry faculty Prateek Gupta sir are doing the detailed analysis of the JEE MAIN QUESTION PAPER as per the reviews by the students of eSaral. In the video, the questions from each subject and the topics from where they were asked are explained using prepometer, the tool designed by the eSaral. In the discussion session the students of eSaral told about the questions and difficulty level and the question that they faced in the examination.

JEE Main 2020 Paper Analysis for January 07th exam is updated here. Students are sharing their reviews of JEE Main Exam here. Watch out the complete video till the end to know in detail!

 

Know the Number of questions asked per chapter:

(Shift-1) – 7th Jan Download PDF

Watch the Reactions and Reviews of Students outside JEE Main Exam Center

 

In physics, it is found that many of the questions were direct and formula based related to the memory of the candidate. There were approximately 10 questions form the class 11th syllabus out of 25 questions.

Watch out the video if you want to know about the same kind of detailed analysis for chemistry and mathematics. You will also get some idea about specific questions and their solutions that were discussed in the analysis video.

So from our analysis we found the overall exam as easy to moderate level. Only a few questions were placed in the difficult to very difficult category and it was found that the question were not much confusing.

We have developed a PDF regarding the detailed analysis. Download the file and know about the exam.

If you think that this time you could not attempt your best attempt then don’t worry we are going to start our BOUNCE BACK CRASH COURSE for the April month JEE MAIN exam. Enroll and ace the exam.

The above PDF contains weightage of number of questions per chapter.

 

JEE MAIN 2020 Paper Analysis for 7th January SHIFT-2

 

 

P
 

 

Know the Number of questions asked per chapter:

(Shift-2) 7th Jan Download PDF 

JEE MAIN 2020 Paper Analysis for 8th January SHIFT-1

(Shift-1) 8th Jan Download PDF 

JEE MAIN 2020 Paper Analysis for 8th January SHIFT-2

(Shift-2) 8th Jan Download PDF

JEE MAIN 2020 Paper Analysis for 9th January SHIFT-1

(Shift-1) 9th Jan Download PDF 

JEE MAIN 2020 Paper Analysis for 9th January SHIFT-2

(Shift-2) 9th Jan Download PDF

 

JEE Main 2020 Question Paper JEE Main question paper for January 07, 08, 09, 2020, for Shift 1 and Shift 2 are given below. Download or View from here!!!

 

S. No.  JEE Main 2020 (January) Shifts Question Papers
1.        January 7, 2020 Shift-1 Download PDF
2.        January 7, 2020 Shift-2 Download PDF
3.        January 8, 2020 Shift-1 Download PDF
4.        January 8, 2020 Shift-2 Download PDF
5.        January 9, 2020 Shift-1 Download PDF
6.        January 9, 2020 Shift-2 Download PDF

 

👉 Click to Join Free Physics Revision Series by Saransh Gupta Sir (AIR-41, IIT-Bombay)

How to Write Answers in Board Exams CBSE Class X | Tips & Topper’s Answer Sheet

CBSE toppers’ answer sheets released by the board form another useful resource which helps to know “How to Write Answers in Board Exams CBSE “. The strategy followed by the highest scorers in different subjects while writing their exam. Understanding their exam writing criteria with which they managed to score maximum or even full marks in exams can definitely help you draw the best plan to write your exam in the best way and hopefully make you the topper in the upcoming CBSE Board Exams 2020.

We are providing here the toppers’ answer sheets for CBSE class 10. These are the answer sheets of students who scored maximum marks in different subjects in CBSE exams in Previous Years. Check toppers’ answer sheets of previous years below:

 

101_ENGLISH-COMM – Answer sheet – DOWNLOAD PDF 

184_ENGLISH-LL – Answer Sheet – DOWNLOAD PDF

002_HINDI-A – Answer Sheet – DOWNLOAD PDF

041_MATHS – Answer Sheet – DOWNLOAD PDF

085_HINDI-B – Answer Sheet – DOWNLOAD PDF

086_SCIENCE – Answer Sheet – DOWNLOAD PDF

087_SOCIAL-SCIENCE – Answer Sheet – DOWNLOAD PDF 

 

ALL THE BEST STUDENTS!!!

 

DOWNLOAD eSaral App for Class X | IIT-JEE | NEET for free Video tutorials and study material.

Mind Maps for Modern Physics: Nuclei Revision – Class XII, JEE, NEET

Nuclear Physics in Class 12 comprises variety of cases with important formulae and key points. So here is the mind map to help you in remembering all the formulas and important key concepts on finger tips.

Download

Nuclear Physics mind Map

 


 

Mind Maps for Atomic Structure Revision – Class XII, JEE, NEET

Atomic Structure in Class 12 comprises variety of cases with important formulae and key points. So here is the mind map to help you in remembering all the formulas and important key concepts on finger tips.

Download

atomic Structure mindmap

 


 

cbse exam dates 2020
CBSE Class 10 Date Sheet 2020 Released | Download PDF Here

Central Board of Secondary Education (CBSE) has commenced the CBSE Class 10 Date Sheet 2020 for the academic year 2019-20. The exams will be conducted from February 15 to March 20, 2020. The exams timings will be from 10:30 AM to 1:30 PM. Students can download the detailed CBSE Class 10 Time Table 2020 from the link Given below.

Students can check the Exam Dates for CBSE 10th Board:

 

Download Class 10th Date Sheet

 

CBSE X Time Table

Date & Time Subject Code Subject Name
WEDNESDAY,26TH FEB 2020 
10:30 AM – 1:30 PM 101 ENGLISH COMM.
184 ENGLISH & LIT.
SATURDAY,29TH FEB 2020 
10:30 AM – 1:30 PM 002 HINDI COURSE-A 
085 HINDI COURSE-B
WEDNESDAY,04TH MAR 2020 
10:30 AM – 1:30 PM 086 SCIENCE – THEORY
090 SCIENCE W/O PRACTICAL
SATURDAY,07TH MAR 2020 
10:30 AM – 1:30 PM 122 SANSKRIT
THURSDAY,12TH MAR 2020 
10:30 AM – 1:30 PM 041 MATHEMATICS STANDARD
241 MATHEMATICS BASIC
WEDNESDAY,18TH MAR 2020 
10:30 AM – 1:30 PM 087 SOCIAL SCIENCE
FRIDAY,20TH MAR 2020 
10:30 AM – 1:30 PM 166 INFORMATION AND COMMUNICATION TECHNOLOGY
165 COMPUTER APPLICATIONS

 

Though, the result of the Board examination is likely to be declared by the first week of June 2020. While releasing the CBSE Class 10 Datasheet, CBSE has stated that this year, students have opted about 30,000 combinations of subjects in both the class 10 and class 12. The board has also decided to conduct the examination of skill subjects in the latter half of February 2020.

CBSE CLASS10 Date Sheet

CBSE has also released some significant points along with the Exam Dates.

  • Answer books would be distributed to students between 10:00 am and 10:15 am.
  • Students have to write their particulars on the answer book and these particulars shall be checked by the Assistant Superintendent.
  • The question paper will be distributed at 10:15 am.
  • The test takers can read the question paper from 10:15 am to 10:30 am (15 minutes).
  • Practical examination in respect of private candidates will be held at the theory examination centres unless otherwise notified.
  • Private candidates should contact the Principal of the school for their theory examination centres for the date and time of practical examination before the theory examination is over.

 

Attempt Mock Tests for Class 10th

 

 

10th Board Exam Preparation Tips:

  • Make your Revision Time table: CBSE ha released Exam dates for Class 10th, so its time to ace up your preparation. Students can plan their revision as per accordance. Students are advised to provide equal time to every subjects to secure good percentage in Board Exams. Also focus on NCERT, as in board Exams questions are asked directly from the textbooks of students.
  • Exam will be conducted in the Morning session from 10:30AM to 1:30 AM, so answer sheets will be distributed at 10:00AM and the students will get question paper at 10:15.
  • Students will be advised to spent 15 minutes in reading question paper carefully and prepare plan on how to approach Exam papers.

Tip: Once the exam starts, it is advised to begin with the easiest questions and then move forward  towards difficult ones! With this approcah you can save extra time to attempt long questions.

  • Don’t take stress stay calm and positive. Even if you don’t know the answers of the questions, don’t stressed out!!!
  • Attempt easy questions first, that will help you in building confidence.
Class 12th Date Sheet 2020

All the Best Students!!!

Download eSaral APP to prepare for Class 10, 11, 12, JEE, NEET and other Entrance Examinations.