A cell of e.m.f. 2 V and negligible inte...

A cell of e.m.f. 2 V and negligible internal resistance is connected in series with a potentiometer wire of length 100 cm. The e.m.f of the Leclanche cell is found to balance on 75 cm of the potentiometer wire. The e.m.f. of the cell is

3.5 V

2.5 V

1.5 V

0.5 V

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