engineering physics MCQ #142

In an AC circuit, the voltage and current are given by V = 100 sin(100πt) and I = 10 sin(100πt + π/4). The power consumed is

engineering physics MCQ #142

  1. Question 1

    Q1. In an AC circuit, the voltage and current are given by V = 100 sin(100πt) and I = 10 sin(100πt + π/4). The power consumed is

    • A) 500 W
    • B) 500√2 W
    • C) 250√2 W
    • D) 250 W

    Answer: 250√2 W

    Explanation: P = V_rms * I_rms * cos(φ) = (100/√2) * (10/√2) * cos(π/4) = 250√2 W