engineering physics MCQ #120

A 50 Hz AC source is connected to a capacitor. If the capacitive reactance is 100 ohm, what is the capacitance?

engineering physics MCQ #120

  1. Question 1

    Q1. A 50 Hz AC source is connected to a capacitor. If the capacitive reactance is 100 ohm, what is the capacitance?

    • A) 31.8 μF
    • B) 63.6 μF
    • C) 15.9 μF
    • D) 31.8 mF

    Answer: 31.8 μF

    Explanation: Xc = 1 / (2πfC). So, C = 1 / (2πfXc) = 1 / (2 * 3.14 * 50 * 100) = 31.8 * 10^(-6) F = 31.8 μF.