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JEE MAIN 2024
04-04-24 S1
Question
To measure the internal resistance of a battery, potentiometer is used. For $\mathrm{R}=10 \Omega$, the balance point is observed at $\ell=500 \mathrm{~cm}$ and for $\mathrm{R}=1 \Omega$ the balance point is observed at $\ell=400 \mathrm{~cm}$. The internal resistance of the battery is approximately :
Select the correct option:
A
$0.2 \Omega$
B
$0.4 \Omega$
C
$0.1 \Omega$
D
$0.3 \Omega$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
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