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A galvanometer has a resistance of G ohm...

A galvanometer has a resistance of G ohm and range of V volt. Calculate the resistance to be used in seres with it to extend its range its renge to nV volt.

A

nG

B

`(n-1)G`

C

`G/n`

D

`G/(n-1)`

Text Solution

Verified by Experts

The correct Answer is:
B

`I_(g)R =(n-1)V`
`rArr I_(g) R = (n-1)I_(g) G`
`rArr R = (n-1)G`
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