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 `3.8
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 maximum
A. A
B. B
C. C
D. constant in each case
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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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