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A conducting disc of radius r rotaes wit...

A conducting disc of radius r rotaes with a small but constant angular velocity `omega` about its axis. A uniform magnetic field B exists parallel to the axis of rotation. Find the motional emf between the centre and the periphery of the disc.

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Velocity at a dostance `(r/2)` from the centre`
`= (r omega)/2`
`E=Blv=Bxxrxx(r omega)/2`
`=(1/2)Br^2 omega.`
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HC VERMA-ELECTROMAGNETIC INDUCTION-Exercises
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