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MHT CET Physics question

PhysicsElectromagnetic InductionMHT CET

A copper disc of radius 0.1 m rotated about its center with 10 revolutions per second in a uniform magnetic field 0.1 T with its plane perpendicular to the field, the emf induced across the radius of the disc is:

Answer: (C)

Solution

\fracr^2\fracf)r^2$=π×0.1×10×0.01=π×10^{-2

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Question ID VK-081528