A moving coil galvanometer consists of a coil of N turns are area A suspended by a thin phosphor bronze strip in radial magnetic field B. The moment of inertia of the coil about the axis of rotation is l and c is the torsional constant of the phosphor bronze strip. When a current i is passed through the coil, it deffects through an angle `theta`
The current sensitivity of the galvanometer is increases if
A. N,A and B are increased and c is decreased
B. N and A are increased and B and c are decreased
C. N, B and c are increased and A is decreased
D. N, A, B and c are all increased
