MDCAT Physics MCQ #117

Why do AC generators use a rotor with a magnet?

MDCAT Physics MCQ #117

  1. Question 1

    Q1. Why do AC generators use a rotor with a magnet?

    • A) To produce a constant magnetic field
    • B) To produce a changing magnetic field
    • C) To reduce the energy loss
    • D) To increase the efficiency

    Answer: To produce a changing magnetic field

    Explanation: Changing magnetic field induces AC current.