engineering physics MCQ #163

The power factor of a series LCR circuit is 0.5. If R = 100 Ω, what is the impedance?

engineering physics MCQ #163

  1. Question 1

    Q1. The power factor of a series LCR circuit is 0.5. If R = 100 Ω, what is the impedance?

    • A) 50 Ω
    • B) 100 Ω
    • C) 200 Ω
    • D) 150 Ω

    Answer: 200 Ω

    Explanation: Use cos(φ) = R / Z: 0.5 = 100 / Z, so Z = 200 Ω.