A galvanometer coil of dimensions with 200 turns is suspended vertically in a field of

PHYSICS · Subjective · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism

Problem

A galvanometer coil of dimensions

5\text{ cm}\times2\text{ cm}

with 200 turns is suspended vertically in a field of

5\times10^{-2}\text{ T}

. The suspension fibre needs a torque of

0.125\times10^{-7}\text{ N m}

to twist it through one radian. Calculate the current required in the coil for a deflection of

6^\circ