engineering physics MCQ #189

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

engineering physics MCQ #189

  1. Question 1

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

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

    Answer: 200 Ω

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