A series ac circuit is shown. The inductor has a reactance of 90 ohms and an ind

Question

A series ac circuit is shown. The inductor has a reactance of 90 ohms and an inductance of 180 mH. A 90 ohm resistor and a capacitor whose reactance is 120 ohms are also in the circuit. The rms current in the circuit is 2.3 A. In the figure, the peak magnetic energy in the inductor is closest to:

A series ac circuit is shown. The inductor has a reactance of 90 ohms and an inductance of 180 mH. A 90 ohm resistor and a capacitor whose reactance is 120 ohms are also in the circuit. The rms current in the circuit is 2.3 A. In the figure, the peak magnetic energy in the inductor is closest to:

Explanation / Answer

current peak value=sqrt(2)*rms value=3.252 A so max energy=0.5*0.18*3.252^2=0.9522 J

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