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A moving coil galvanometer gives full sc...

A moving coil galvanometer gives full scale defection when a current of 0.005 A is passed through its coil it is converted in to a voltmeter reading up to 5V by using an external resistance of 975 `Omega` what is the resistance of the galvanometer coil ?

A

5

B

10

C

15

D

25

Text Solution

Verified by Experts

The correct Answer is:
D
Given `V=5V,l_()=0.005A` and `R=975Omega`
`implies R=V/(l_(g))-G`or `G=V/(l_(g))-R`
`:.G=5/0.005-975=25Omega`
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