MDCAT Physics MCQ #657

An inductor in a circuit opposes changes in current by producing a back electromotive force (EMF). What is the cause of this back EMF?

MDCAT Physics MCQ #657

  1. Question 1

    Q1. An inductor in a circuit opposes changes in current by producing a back electromotive force (EMF). What is the cause of this back EMF?

    • A) Magnetic field weakening
    • B) Electromagnetic induction
    • C) Thermal expansion of inductor
    • D) Resistance in the inductor

    Answer: Electromagnetic induction

    Explanation: Electromagnetic induction causes the back EMF, while the other options are unrelated or incorrect.