MDCAT Physics MCQ #832

A solenoid is placed near a coil of wire. What is the reason behind the changing current in the solenoid?

MDCAT Physics MCQ #832

  1. Question 1

    Q1. A solenoid is placed near a coil of wire. What is the reason behind the changing current in the solenoid?

    • A) The changing current is due to the thermal expansion of the solenoid.
    • B) The changing current is due to the flow of electrons in the solenoid.
    • C) The changing current is due to the changing magnetic field in the coil.
    • D) The changing current is due to the presence of a permanent magnet near the solenoid.

    Answer: The changing current is due to the changing magnetic field in the coil.

    Explanation: The changing current in the solenoid is due to the changing magnetic field in the coil, which induces an electromotive force in the solenoid due to electromagnetic induction.