engineering physics MCQ #162

A coil has an inductance of 0.2 H and resistance 100 Ω. What is the impedance at 50 Hz?

engineering physics MCQ #162

  1. Question 1

    Q1. A coil has an inductance of 0.2 H and resistance 100 Ω. What is the impedance at 50 Hz?

    • A) 128.06 Ω
    • B) 100 Ω
    • C) 116.62 Ω
    • D) 50 Ω

    Answer: 116.62 Ω

    Explanation: Use Z = √(R² + XL²): XL = 2π * 50 * 0.2 = 62.8, Z = √(100² + 62.8²) = 116.62 Ω.