In a potentiometer experiment when terminals of \( \mathrm{P} \) the cell are connected at dista...

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In a potentiometer experiment when terminals of
\( \mathrm{P} \) the cell are connected at distance of \( 52 \mathrm{~cm} \) on the

W wire, then no current flows through it. When \( 5 \Omega \) shunt resistance is connected across the cell the balancing length is \( 40 \mathrm{~cm} \). The intemal resistance of the cell (in \( \Omega \) ) is :-
(1) 5
(2) \( \frac{200}{52} \)
(3) \( \frac{52}{8} \)
(4) \( 1.5 \)
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