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To send 10% of the main current through ...

To send 10% of the main current through a moving coil galvanometer of resistance `99omega`, the shunt required is –

A

`9.9 Omega`

B

`10 Omega`

C

`11 Omega`

D

`9 Omega`

Text Solution

Verified by Experts

The correct Answer is:
C

Required resistance which should be added in series so that , the current in the circuit is given by Initial resistance = Final resistane
i.e., `G=((Gs)/(G+s))+R`
`therefore R=G-((GS)/(G+S))=(G^2)/(G+S)`.
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