engineering physics MCQ #138

The power factor of an LCR circuit is 0.5. If the resistance is 100 Ω, what is the impedance?

engineering physics MCQ #138

  1. Question 1

    Q1. The power factor of an LCR circuit is 0.5. If the resistance is 100 Ω, what is the impedance?

    • A) 50 Ω
    • B) 100 Ω
    • C) 200 Ω
    • D) 400 Ω

    Answer: 200 Ω

    Explanation: Power factor = cos(φ) = R/Z = 0.5. So, Z = R/0.5 = 100/0.5 = 200 Ω