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Current Electricity question

2024 · 4 Apr · Shift 1 · Q79

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JEE Main
Physics
Current Electricity
2024 · 4 Apr · Shift 1 · Q79

Current Electricity question

2024 · 4 Apr · Shift 1 · Q79

JEE MainPhysicsCurrent ElectricityMCQ+4 / −1

To measure the internal resistance of a battery, potentiometer is used. For

R=10 \Omega

, the balance point is observed at

l=500 \mathrm{~cm}

and for

\mathrm{R}=1 \Omega

the balance point is observed at

l=400 \mathrm{~cm}

. The internal resistance of the battery is approximately :

A
$0.1 \Omega$
B
$0.3 \Omega$
C
$0.2 \Omega$
D
$0.4 \Omega$

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