A circular metal plate of radius R is rotating with a uniform angular velocity ω with its plane perpendicular to a uniform magnetic field B. Then the emf developed between the centre and the rim of the plate is
A
πωBR2
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B
ωBR2
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C
πωBR2/2
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D
ωBR2/2
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Solution
The correct option is DωBR2/2 We write d∈=Blv(ϵHF)