engineering physics MCQ #289

A capacitor of capacitance 100 μF is connected to an AC source of 220 V, 50 Hz. What is the rms current?

engineering physics MCQ #289

  1. Question 1

    Q1. A capacitor of capacitance 100 μF is connected to an AC source of 220 V, 50 Hz. What is the rms current?

    • A) 1.1 A
    • B) 6.9 A
    • C) 3.14 A
    • D) 2.2 A

    Answer: 6.9 A

    Explanation: Xc = 1 / (2πfC) = 1 / (2 * 3.14 * 50 * 100 * 10^(-6)) = 31.83 Ω. Irms = Vrms / Xc = 220 / 31.83 = 6.9 A.