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Physics · 2018
JEE Main 2018 · 2018-04-08 Offline · Q29
In a potentiometer experiment, it is found that no current passes through the galvanometer when the terminals of the cell are connected across 52 cm…
In a potentiometer experiment, it is found that no current passes through the galvanometer when the terminals of the cell are connected across $\displaystyle 52$ cm of the potentiometer wire. If the cell is shunted by a resistance of $\displaystyle 5 \Omega$, a balance is found when the cell is connected across $\displaystyle 40$ cm of the wire. Find the internal resistance of the cell.
Official answer
(2)
$\displaystyle 1.5 \Omega$
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