In the figure, the voltages are v1(t) = 100 cos (ωt), v2(t) = 100 cos – McqOptions

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1.	In the figure, the voltages are v1(t) = 100 cos (ωt), v2(t) = 100 cos (ωt + π/18) and v3(t) = 100 cos (ωt + π/36). The circuit is in sinusoidal steady state, and R << ωL. P1, P2 and P3 are the average power outputs. Which one of the following statements is true?
A.	P1 = P2 = P3 = 0
B.	P1 < 0, P2 > 0, P3 > 0
C.	P1 < 0, P2 > 0, P3 < 0
D.	P1 > 0, P2 < 0, P3 > 0
Answer» D. P1 > 0, P2 < 0, P3 > 0

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