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Frequency and amplitude of emf in wire loop

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A stiff wire bent into a semicircle of radius a=2.0 cm is rotated at constant angular speed 40 rev/s in a uniform 20 mT magnetic field. What are the (a) frequency and (b) amplitude of the emf induced in the loop?

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This solution calculates the frequency and amplitude of the emf induced in a wire loop.

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