Three moving coil galvanometer A,B and C are made of coils of three different material having torsional constant `1.8xx10^(-8), 2.8xx10^(-8)` and `3.8xx10^(-8)` respectively if the three galvanometer are identical in all other respect then in which of the above cases sensitivity maximumA. AB. BC. CD. constant in each case

Three moving coil galvanometer A,B and C are made of coils of three di

1.	Three moving coil galvanometer A,B and C are made of coils of three different material having torsional constant `1.8xx10^(-8), 2.8xx10^(-8)` and `3.8xx10^(-8)` respectively if the three galvanometer are identical in all other respect then in which of the above cases sensitivity maximumA. AB. BC. CD. constant in each case
Answer» Correct Answer - A `S=(n AB)/(K) therefore S prop (1)/(K)`. Thus , for maximum sensitivity , torsional constant should be minimum.

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