A potentiometer wire is 100cm long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 5-cm and 10cm from the positive end of the wire in the two cases.The ratio of emfs is

Options

(a) (5:4)
(b) (3:4)
(c) (3:2)
(d) (5:1)

Correct Answer:

(3:2)

Explanation:

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