engineering physics MCQ #1252

A coil of inductance 0.2 H is connected to a 10 V battery. If current changes at 5 A/s, find induced emf.

engineering physics MCQ #1252

  1. Question 1

    Q1. A coil of inductance 0.2 H is connected to a 10 V battery. If current changes at 5 A/s, find induced emf.

    • A) 1 V
    • B) -1 V
    • C) 0 V
    • D) 10 V

    Answer: 1 V

    Explanation: ε = -L(dI/dt) = -0.2 * 5 = 1 V.