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When a resistance of 2 ohm is placed acr...

When a resistance of 2 ohm is placed across a battery the current is 1 A and when the resistance across the terminals is 17 ohm, the current is 0.25A. The emf of the battery is

A

4.5 V

B

5 V

C

3 V

D

6 V

Text Solution

Verified by Experts

The correct Answer is:
C
`i = E/(R + r)`
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