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The resistance of the coil of an emmeter...

The resistance of the coil of an emmeter is `R`. The shunt required to increase its range `n-fold` should have a resistance.

A

`(n -1)R`

B

`( R)/(n - 1)`

C

`( R)/(n)`

D

`n R`

Text Solution

Verified by Experts

The correct Answer is:
B

`(i-i_g) S = i_g G`
`(n i_g - i_g) S = i_g R`
`S = ( R)/(n -1)`.
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