A coil has resistance r8ohms and inductance l5millihenries, Ask an Expert

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A coil has resistance R=8Ohms and inductance L=5milliHenries and is powered by a generator with variable frequency and maximum voltage V = 10Volts.

(a) What is the average power used by the coil when the generator operates at 60Hz?

(b) What is the average power used by the coil when the generator operates at one-thousand times the frequency in (a)?

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