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A copper disc of radius 1 m is rotated a...

A copper disc of radius 1 m is rotated about its natural axis with an angular velocity 2 rad/sec in a uniform magnetic field of 5 tesla with its plane perpendicular to the field. Find the emf induced between the centre of the disc and its rim.

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`e = 1/2 B omega r^2 , e = 1/2 xx 5 xx2 xx 1 xx 1 = 5` volt
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