A series RL circuit in which R = 5 and L = 20 mH (Fig. 17-11)

A series RL circuit in which R = 5 Ω and L = 20 mH (Fig. 17-11) has an applied voltage v = 100 + 50 sin ωt + 25 sin 3ωt (V), with ω = 500 rad/s. Find the current and the average power.

Compute the equivalent impedance of the circuit at each frequency found in the voltage function. Then obtain the respective currents.

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C Fig. 17-11 5 Ω 20 mH