Question

A flat, rectangular coil is placed in a uniform magnetic field and rotated about an axis passing through its centre, parallel to its shorter edges and perpendicular to the field. The maximum emf induced is E. If the axis is shifted to coincide with one of the shorter edges, the maximum induced emf will be 

(a) zero 

(b) E/2 

(c) E 

(d) 2E

Answer 1

Correct Answer is: (c) E

The flux linked with the coil does not depend upon the position of the axis of rotation. The induced emf depends only on the rate of change of this flux.