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 amme
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)/(2)(I-I_g)/((2I-I_g))`
B. `(2I-I_g)/(I-I_g)`
C. 1
D. 2
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Correct Answer - B
`S_1=((L_g)/(I-I_g))G and S_2=((I_g)/(2I-I_g))G`
`(S_1)/(S_2)=(2I-I)/(I-I_g)`
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