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A potentiometer wire is 100 cm long and ...

A potentiometer wire is `100 cm` 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 `50 cm` and `10 cm` from the positive end of the wire in the two cases. The ratio of emfs is:

A

`5:4`

B

`3:4`

C

`3:2`

D

`5:1`

Text Solution

Verified by Experts

The correct Answer is:
C
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