engineering physics MCQ #94

In an AC circuit, V = 200 sin(100πt) and I = 5 sin(100πt + π/4). The impedance is

engineering physics MCQ #94

  1. Question 1

    Q1. In an AC circuit, V = 200 sin(100πt) and I = 5 sin(100πt + π/4). The impedance is

    • A) 40 Ω
    • B) 20√2 Ω
    • C) 20 Ω
    • D) 40√2 Ω

    Answer: 40√2 Ω

    Explanation: Z = V_peak / I_peak = 200 / 5 = 40 Ω. But we need to consider the phase difference.