Q. In the figure, the voltages are 𝑣1(𝑡) = 100cos(𝜔𝑡), 𝑣2(𝑡) = 100cos(𝜔𝑡 + 𝜋/18) and 𝑣3(𝑡) = 100cos(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
Ans: 𝑃1 < 0, 𝑃2 > 0, 𝑃3 < 0
