Physics · 2024
JEE Main · 4 April 2024, Shift 1 · Q50
To measure the internal resistance of a battery, potentiometer is used. For R =10 Ω, the balance point is observed at l=500 cm and for R =1 Ω the…
To measure the internal resistance of a battery, potentiometer is used. For $\displaystyle \mathrm{R}=10 \Omega$, the balance point is observed at $\displaystyle l=500 \mathrm{~cm}$ and for $\displaystyle \mathrm{R}=1 \Omega$ the balance point is observed at $\displaystyle l=400 \mathrm{~cm}$. The internal resistance of the battery is approximately:
Official answer
From NTA’s final answer key for this paper.
(3)
$\displaystyle 0.3 \Omega$
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JEE Main 2024 Physics question, with the answer from NTA’s final answer key. Where our answers come from.