Question

A square coil with a loop area 0.01m2 and 50 turns is rotated about its axis at right angle to a uniform magnetic field B = 1T.Calculate the instantaneous value of e.m.f induced in the coil when it’s plane is – a) at right angle to the field b )in the plane of the field c) when the plane of coil is 450 to the field.
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Answer 1

Answer:

Initially flux , o =ba caso =ba after rotating though an angle 900 . flux though the coil is zero so , Triangle o = ba angular speed =w so , time , period .