NCERT Solutions for Class 12 Physics Chapter 6 - Electromagnetic Induction - PDF Download
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The electromagnetic induction class 12 chapter 6, explains how an electrical current is produced. You can learn the phenomenon related to changing magnetic fields and the principles related to it. After the introduction part you will learn about experiments by Henry and Faraday then magnetic flux and Faraday's law of induction have been discussed. Then after Lenz laws and conservation of energy and Eddy current, inductance etc. are explained in an easy way in this chapter.
On this website you will get the free pdf format of chapter 6 Electromagnetic Induction solution which helps you to score good in your board exams and many other competitive exams.
Topics covered in Class 12 Physics Electromagnetic Induction are:
|
Section Number |
Topic |
|
6.1 |
Introduction |
|
6.2 |
The Experiments of Faraday and Henry |
|
6.3 |
Magnetic Flux |
|
6.4 |
Faraday’s Law of Induction |
|
6.5 |
Lenz’s Law and Conservation of Energy |
|
6.6 |
Motional Electromotive Force |
|
6.7 |
Inductance |
|
6.7.1 |
Mutual inductance |
|
6.7.2 |
Self-inductance |
|
6.8 |
AC Generator |
The Experiments of Faraday and Henry
In the first experiment of Faraday and Henry, the coil was connected to a galvanometer. After that a bar magnet was pushed towards the coil This was done in such a way that the north pole was pointing towards the coil. It was observed that as the bar magnet shifted, the galvanometer showed deflection.
Magnetic Flux
Magnetic flux is a measurement of the total no. of magnetic field which passes through a close surface area.
Faraday’s Law of Induction
First law states that whenever there is a change in magnetic flux related to a coil, EMF is induced in that coil.
Second law states that the magnitude of EMF induced in the coil is directly proportional to the rate of change of magnetic flux related to that coil.
Lenz’s Law and Conservation of Energy
Lenz’s Law states that the polarity of induced emf is such that it tends to produce a current which opposes the change in magnetic flux that produced it.
Motional Electromotive Force
An emf induced by motion relative to a magnetic field is called a motional emf. It is denoted by the equation emf = LvB, where L is the length of the object moving at speed v relative to the strength of the magnetic field B.
Inductance
Inductance is known as the ratio of voltage to the rate of change of current. And tendency of an electrical conductor to oppose a change in the electric current flowing through it. The flow of electric current produces a magnetic field around the conductor. The field strength depends on the magnitude of the current, and it follows any changes in current.
Mutual Inductance
When two coils are brought in close to each other, the magnetic field in one of the coils tends to link with the other. This further leads to the generating voltage in the second coil. This coil’s property which affects or changes the current and voltage in a secondary coil is called mutual inductance.
Self Inductance
Self Inductance is the way of a coil to resist changes in current in itself. Whenever current changes through a coil, they induce an EMF, which is directly proportional to the rate of change of current through the coil.
AC Generator
An AC generator is a machine that converts mechanical energy into electrical energy. The AC Generator's input supply is mechanical energy supplied by gas turbines, steam turbines, and combustion engines and the output is alternating electrical power in the form of alternating current and voltage.
Key Features of Current Electricity Class 12 Chapter 3 Physics NCERT Solutions
The key features of NCERT Solutions for Class 12 Physics Chapter 6 are the following
1. The answers of the question given in chapter are prepared by highly expert Physics teachers.
2. Every important topic is explained in simple language to help you secure good marks in your exams.
3. You will get a thorough understanding of the important concepts using the NCERT Solutions.
Frequently Asked Questions
Find answers to common questions.
What topics are covered in NCERT Solutions for Class 12 Physics Chapter 6?
Chapter 6 covers Introduction to Electromagnetic Induction, Experiments of Faraday and Henry, Magnetic Flux, Faraday's Law of Induction, Lenz's Law and Conservation of Energy, Motional EMF, Energy Consideration, Eddy Currents, Inductance (Mutual and Self), and the AC Generator. These NCERT solutions address every exercise question from each of these sections.
What is Faraday's Law of Electromagnetic Induction in simple terms?
Faraday's Law says that a changing magnetic flux through a coil produces an EMF in that coil. The faster the flux changes, the greater the induced EMF. Mathematically, ε = −N(dΦ/dt), where N is the number of turns. The negative sign shows that the induced EMF opposes the change, as stated by Lenz's Law.
What is the difference between self-inductance and mutual inductance?
Self-inductance occurs in one coil, while mutual inductance occurs between two coils. Both are measured in Henry (H).
Is Electromagnetic Induction important for JEE Main?
Yes. It is an important topic, especially Faraday’s law, motional EMF, and inductance.
Where can I download NCERT Solutions for Class 12 Physics Chapter 6?
The free PDF of Chapter 6 NCERT Solutions is available on this page with step-by-step solutions.