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When a resistance of 2 Omega is connecte...

When a resistance of `2 Omega` is connected across the terminals of a cell, the current is 0.5 A. When resistance is increased to `5 Omega`, the current is 0.25 A. the emf of the cell is

A

1V

B

1.5 V

C

2 V

D

2.5 V

Text Solution

Verified by Experts

The correct Answer is:
B
E=i(R+r)
E=1.5V
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