A metallic ring of radius R moves in a vertical plane in the presence of a uniform magnetic field B perpendicular to the plane of the ring. At any given instant of time its centre of mass moves with a velocity v while ring rotates in its COM frame with angular velocity ω as shown in the figure. The magnitude of induced e.m.f. between points O and P is -
A
Zero
B
vBR 
C
vBR
D
2 vBR
Text Solution
Verified by ExpertsThe correct answer is:
C
ε = Blv = B(R)v
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