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When a 12 Omega resistor is connected wi...

When a `12 Omega` resistor is connected with a moving coil galvanometer, then its deflection reduces form 50 divions to 10 divisions. The ressitance of the galvanometer is

A

`24 Omega`

B

`36 Omega`

C

`48 Omega`

D

`60 Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
`S =(I_(g)/(i- I_(g))) R_(G) rArr 12 =(10/(50-10)) xx R_(G)`
`rArr R_(G) =(12 xx 40)/10 = 48 Omega`
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