The sensitivity of a tangent galvanometer is increased if

Options

A. Number of turn decreases
B. Number of turn increases
C. Field increases
D. None of the above

Answer

B

Explanation

Sensitivity `S= (theta)/(i)= (theta)/(K tan theta)` where `K= (2RB_(H))/(mu_(0)N)`
For increasing sensitivity K should be decreased and hence number of turns should be increased