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In the circuit shown, the galvanometer s...

In the circuit shown, the galvanometer shows zero current. The value of resistance R is :

A

`1 Omega`

B

`2 Omega`

C

`4 Omega`

D

`9 Omega`

Text Solution

Verified by Experts

The correct Answer is:
A

If pot drop between A and B is also 2V, then no current will pass through the galvanometer.
Pot drop across `R = ((12)/(R+5))R =2`
`12 R =2R+10 R =1 Omega`
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