engineering physics MCQ #237

A coil has a resistance of 10 ohm and an inductance of 0.1 H. What is the impedance at 50 Hz?

engineering physics MCQ #237

  1. Question 1

    Q1. A coil has a resistance of 10 ohm and an inductance of 0.1 H. What is the impedance at 50 Hz?

    • A) √(10² + 31.4²) ohm
    • B) √(10² - 31.4²) ohm
    • C) 10 + 31.4 ohm
    • D) 10 - 31.4 ohm

    Answer: √(10² + 31.4²) ohm

    Explanation: Impedance Z = √(R² + Xl²), where Xl = 2 * π * f * L = 31.4 ohm.