engineering physics MCQ #1246

A coil has self-inductance 0.5 H. If current changes from 0 to 1 A in 0.2 s, find induced emf.

engineering physics MCQ #1246

  1. Question 1

    Q1. A coil has self-inductance 0.5 H. If current changes from 0 to 1 A in 0.2 s, find induced emf.

    • A) 2.5 V
    • B) -2.5 V
    • C) 0.5 V
    • D) -0.5 V

    Answer: 2.5 V

    Explanation: ε = -L(dI/dt) = -0.5 * (1 / 0.2) = 2.5 V.