engineering physics MCQ #136

In an AC circuit, V = 100 sin(100πt) and I = 100 sin(100πt + π/3). Power loss is

engineering physics MCQ #136

  1. Question 1

    Q1. In an AC circuit, V = 100 sin(100πt) and I = 100 sin(100πt + π/3). Power loss is

    • A) 10⁴ W
    • B) 5 x 10³ W
    • C) 2.5 x 10³ W
    • D) 5 x 10² W

    Answer: 2.5 x 10³ W

    Explanation: Power loss = V_rms * I_rms * cos(φ) = (100/√2) * (100/√2) * cos(π/3) = 2500 W