In an experiment to measure the internal resistance of a cell by a potentiometer, it is found th... VIDEO
In an experiment to measure the internal resistance of a cell by a potentiometer, it is found that the balance point is at a length of \( 2 \mathrm{~m} \) when the cell is shunted by a \( 5 \Omega \) resistance and is at a length of \( 3 \mathrm{~m} \) when the cell is shunted by a \( 10 \Omega \) resistance, the internal resistance of the cell is then
(1) \( 1.5 \Omega \)
(2) \( 10 \Omega \)
(3) \( 15 \Omega \)
(4) \( 1 \Omega \)
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