MDCAT Physics MCQ #121

A patient is undergoing an MRI scan using a magnetic field generated by an alternating current. What is the primary reason for using an AC magnetic field?

MDCAT Physics MCQ #121

  1. Question 1

    Q1. A patient is undergoing an MRI scan using a magnetic field generated by an alternating current. What is the primary reason for using an AC magnetic field?

    • A) To increase the magnetic field strength
    • B) To reduce the energy losses in the magnetic field coils
    • C) To produce a changing magnetic field that induces an electromotive force
    • D) To create a static magnetic field for diagnostic purposes

    Answer: To produce a changing magnetic field that induces an electromotive force

    Explanation: The changing magnetic field induces an electromotive force, which is used to create detailed images of the body's internal structures.