In a potentiometer experiment

PHYSICS · Subjective · CBSE · Physics · Current Electricity · Current Electricity

Problem

In a potentiometer experiment, no current passes through the galvanometer when the terminals of a cell are connected across

0.52\,\text{m}

of the potentiometer wire. If the cell is shunted by a resistance of

5\,\Omega

, a balance is obtained when the cell is connected across

0.4\,\text{m}

of the wire. Find the internal resistance of the cell.