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A galvanometer having a coil resistance...

A galvanometer having a coil resistance `100 Omega` given full scale deflection when a current of 1mA is passed throught it . What is the value of the resistance which can convert this galvanometer into a voltmeter giving full scale deflection for a potential difference of 10 V ?

A

`19.9kOmega`

B

`48.9kOmega`

C

`48.8kOmega`

D

`10kOmega`

Text Solution

Verified by Experts

The correct Answer is:
C
`i_(8)=1mA,R_(g)=200Omega`
`V=i_(g)(R+R_(g))`
`50 = 1xx10^(-3)(R+200)`
`R = 49.8kOmega`
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