First slide
Faraday's law of Electromagnetic induction
Question

A rectangular coil ABCD is rotated anticlockwise with a uniform angular velocity about the axis shown in diagram below. The axis of rotation of the coil as well as the magnetic field B are horizontal. The induced e.m.f. in the coil would be maximum when

Moderate
Solution

EMF = e=e0sinθ   where θ is the angle between area vector A and magnetic field vector B ;e will be maximum when θ is 90° i.e., plane of the coil will be horizontal.

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