A moving coil galvanometer has N number of turns in a coil of effective area A, it carries a current I. The magnetic field B is radial. The torque acting on the coil is
A. NA2B2I
B. NABI2
C. N2ABI
D. NABI
Answer:D
A moving coil galvanometer has N number of turns in a coil of effective area A, it carries a current I. The magnetic field B is radial. The torque acting on the coil is
A. NA2B2I B. NABI2 C. N2ABI D. NABI