engineering physics MCQ #247

The equation of an AC voltage is V = 100 sin(100πt). The frequency and rms voltage are

engineering physics MCQ #247

  1. Question 1

    Q1. The equation of an AC voltage is V = 100 sin(100πt). The frequency and rms voltage are

    • A) 50 Hz, 70.7 V
    • B) 100 Hz, 100 V
    • C) 50 Hz, 100 V
    • D) 100 Hz, 70.7 V

    Answer: 50 Hz, 70.7 V

    Explanation: ω = 100π, f = ω / (2π) = 50 Hz, Vrms = Vpeak / √2 = 100 / √2 = 70.7 V.