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In a potentiometer experiment,

Question:

In a potentiometer experiment, it is found that no current passes through the galvanometer when the terminals of the cell are connected across $52 \mathrm{~cm}$ of the potentiometer wire. If the cell is shunted by a resistance of $5 \Omega$, a balance is found when the cell is connected across $40 \mathrm{~cm}$ of the wire. Find the internal resistance of the cell.

  1. $1.5 \Omega$

  2. $2 \Omega$

  3. $2.5 \Omega$

  4. $1 \Omega$


Correct Option: 1

Solution:


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