engineering physics MCQ #172

For a coil with inductance 0.1 H, the current changes from 1 A to 2 A in 0.1 s. Find induced emf.

engineering physics MCQ #172

  1. Question 1

    Q1. For a coil with inductance 0.1 H, the current changes from 1 A to 2 A in 0.1 s. Find induced emf.

    • A) 1 V
    • B) -1 V
    • C) 10 V
    • D) -10 V

    Answer: -1 V

    Explanation: Use ε = -L * (ΔI / Δt), where ε is induced emf, L is inductance, and ΔI / Δt is rate of change of current.