Question:

14. A moving coil galvanometer has been fitted with a rectangular coil having 50 turns and dimensions 5 cm × 3 cm. The radial magnetic field in which the coil is suspended is of 0.05 Wb/m² . The torsional constant of the spring is 1.5 × 10⁻⁹ Nm/ degree. Obtain the current required to be passed through the galvanometer so as to produce a deflection of 30°.