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JEE Main 2024 (Online) 4th April Morning Shift

MCQ+4 / -12024

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 :

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