engineering physics MCQ #58

A capacitor of capacitance 100 μF is connected to an AC source of voltage 200 V and frequency 50 Hz. The reactance is

engineering physics MCQ #58

  1. Question 1

    Q1. A capacitor of capacitance 100 μF is connected to an AC source of voltage 200 V and frequency 50 Hz. The reactance is

    • A) 31.84 Ω
    • B) 31.84 kΩ
    • C) 10 Ω
    • D) 100 Ω

    Answer: 31.84 Ω

    Explanation: Capacitive reactance Xc = 1 / (2πfC). With f = 50 Hz and C = 100 μF = 1e-4 F, Xc = 1 / (2π × 50 × 1e-4) ≈ 31.84 Ω.