In a potentiometer experiment a cell of e.m.f 1.5 V connected in the secondary circuit gives a balancing length of 165 cm of the wire. If a resistance of 5 Ω Ω is connected in parallel to the cell, the balancing length of the wire is 150 cm. The internal resistance of the cell is -
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D
In a potentiometer experiment internal resistance is given by,
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