A square coil of side 10cm and 500 turns rotates at a uniform rate of 1800revmin−1 about an axis perpendicular to a uniform magnetic field of magnitude 0.25T. At t=0 the normal to the plane of the coil makes an angle of 60∘ with the field and the rotation starts in the direction that reduces this angle.
(1) a. (a)
(2) b. (b)
(3) c. (c)