engineering physics MCQ #52

A capacitor of capacitance 1 μF is connected to an AC source of 220 V, 50 Hz. The rms current is

engineering physics MCQ #52

  1. Question 1

    Q1. A capacitor of capacitance 1 μF is connected to an AC source of 220 V, 50 Hz. The rms current is

    • A) 6.9 mA
    • B) 69 mA
    • C) 0.69 A
    • D) 6.9 A

    Answer: 69 mA

    Explanation: XC = 1/(2πfC) = 1/(2π * 50 * 1e-6) = 3183 Ω, Irms = Vrms/XC = 220/3183 = 0.069 A = 69 mA.