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In the circuit shown the cells A and B h...

In the circuit shown the cells `A` and `B` have negligible resistance. For `V_(A) = 12 V, R_(1) = 500 Omega` and `R = 100 Omega`, the galvanometer `(G)` shows no deflection. The value of `V_(B)` is

A

4 V

B

2V

C

12 V

D

6V

Text Solution

Verified by Experts

The correct Answer is:
B

If there is no current in the galvanometer, then
`I=(12)/(500+100)=(12)/(600)=(1)/(50)A`
`therefore V_(B)=IR =(1)/(50)xx100=2 V`
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