Question

A circular coil of wire with 5 turns and a radius of 4.0 cm lies flat...

A circular coil of wire with 5 turns and a radius of 4.0 cm lies flat on a table in a region where the magnetic field is 4.5 mT up. The coil is flipped over in a time of 0.25 s. Is an emf induced in the coil? If so, what is its average value?

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Answer #1

Since the flux changes in the coil in the process of flipping it over, the EMF will be induced according to Faraday’s law of electromagnetic induction. We find its value as shown below

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