In a potentiometer experiment for measuring the emf of a cell, the null point is at 240 {\cm} when we have a 500 \\Omega resistor in series with the cell and galvanometer. If the series resistance reduced to half, then the null point will be at

Manipal Entrance Test 2016 Physics Paper

Question : 19 of 50

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In a potentiometer experiment for measuring the emf of a cell, the null point is at 240‌cm when we have a 500Ω resistor in series with the cell and galvanometer. If the series resistance reduced to half, then the null point will be at

480‌cm
240‌cm
120‌cm
60‌cm

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