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A galvanometer has resistance G and Curr...

A galvanometer has resistance `G` and Current `I_(g)` produces full scale deflection. `S_(1)` is the value of the shunt which converts it into an ammeter of range `0-I` and `S_(2)` is the value of shunt for the range `0-2I`. The ratio of `S_(1)` and `S_(2)` is

A

1

B

2

C

`(1)/(2)((i-i_(a))/(2iu-i_(a)))`

D

` ((2i-i_(a))/(i-i_(a)))`

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