An AC generator has a sinusoidal EMF with a maximum value of 28.0 V and a freque

Question

An AC generator has a sinusoidal EMF with a maximum value of 28.0 V  and a frequency of 60.0 Hz; the generator is connected to an inductor of inductance 11.10 H.  The resistance in the circuit is small enough to ignore.
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(c) At the instant of time for which the EMF of the generator is -15.4000 V and increasing in absolute value, what is the current in the circuit?
      A

(d) At the same instant of time as in part (c), what is the power output of the generator?
      W
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Explanation / Answer

XL = 2pifL = 2*3.14* 60 *11.10 = 4182.48 ohms

V = iXC

i = =15,400/4182.48 =-3.68 A

POwer = VI = -15.400*3.68 =56.7 KW

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