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For driving a current of 2 A for 6 min...

For driving a current of 2 A for 6 minutes in a circuit, 1000 J of work is to be done. The e.m.f. of the source in the circuit is

A

1.38 V

B

1.68 V

C

2.04 V

D

3.10 V

Text Solution

Verified by Experts

The correct Answer is:
A
Energy `="Vlt" rArr 1000 = V xx 2 xx 6 xx 60`
`rArr V = 1000/720 = 100/72 = 1.38 V`
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