AP EAMCET Engineering 23 Apr 2019 Shift 1 Paper

A circular coil of radius 10 cm with 100 turns carrying a current of 0.5 A lies in a magnetic field of 2 T such that the normal drawn to the plane of the coil makes an angle ‘θ' with the direction of the field. Work done in rotating the coil to change the angle ‘θ’ from 0° to 180° is