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When two cells of different emf.s are co...

When two cells of different emf.s are connected in series to an external resistance the current is 5A. When the poles of one cell are interchanged, the current is 3A. The ratio of emf.s of two cell is

A

`2:1`

B

`1:3`

C

`5:1`

D

`4:1`

Text Solution

Verified by Experts

The correct Answer is:
D
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