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JEE MAIN 2026
28-01-26 S1
Question
In the potentiometer, when the cell in the secondary circuit is shunted with $4 \Omega$ resistance, the balance is obtained at the length 120 cm of wire. Now when the same cell is shunted with $12 \Omega$ resistance, the balance is shifted to a length of 180 cm . The internal resistance of cell is $\_\_\_\_$ $\Omega$
Select the correct option:
A
3
B
4
C
12
D
6
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
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