Question

The sensitiveness of a moving coil galvanometer can be increased by decreasing

• A. (a) The number of turns in the coil
• A. (b) The area of the coil
• A. (c) The magnetic field
• A. (d) The couple per unit twist of the suspension

Answer 1

(d)

Sol. Sensitivity $S = \frac { \theta } { i } = \frac { n B A } { C }$