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When a moving coil galvanometer is shunt...

When a moving coil galvanometer is shunted with a resistance of `10 Omega`,the deflection in the galvanometer reduces from 30 divisions to 6 divisions. The resistance of the galvanometer is

A

`40 Omega`

B

`50 Omega`

C

`30 Omega`

D

`20 Omega`

Text Solution

Verified by Experts

The correct Answer is:
A
`I_g/I=6/(30)=1/5=S/(S+G)=10/(10+G) therefore 50=10+G therefore G=40Omega`
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