engineering physics MCQ #179

A coil has resistance 10 Ω and inductance 0.1 H. It is connected to an AC source of 100 V, 50 Hz. Find impedance.

engineering physics MCQ #179

  1. Question 1

    Q1. A coil has resistance 10 Ω and inductance 0.1 H. It is connected to an AC source of 100 V, 50 Hz. Find impedance.

    • A) 33.33 Ω
    • B) 31.42 Ω
    • C) 10 Ω
    • D) 32.36 Ω

    Answer: 32.36 Ω

    Explanation: Use Z = √(R² + X_L²), where X_L = 2πfL, f is frequency, and L is inductance.