A fl at coil of wire is used with an LC-tuned circuit as a

Chapter , Problem 6

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A fl at coil of wire is used with an LC-tuned circuit as a receiving antenna. The coil has a radius of 0.25 m and consists of 450 turns. The transmitted radio wave has a frequency of 1.2 MHz. The magnetic fi eld of the wave is parallel to the normal to the coil and has a maximum value of 2.0 3 10213 T. Using Faradays law of electromagnetic induction and the fact that the magnetic fi eld changes from zero to its maximum value in one-quarter of a wave period, fi nd the magnitude of the average emf induced in the antenna during this time.

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