MDCAT Physics MCQ #858

A researcher uses a non-contact current meter to measure the electrical current in a circuit. What is the principle behind the meter's functioning?

MDCAT Physics MCQ #858

  1. Question 1

    Q1. A researcher uses a non-contact current meter to measure the electrical current in a circuit. What is the principle behind the meter's functioning?

    • A) Electromagnetic induction causing a change in voltage
    • B) Magnetic fields causing a change in resistance
    • C) Electromagnetic waves causing a change in charge flow
    • D) Lorentz force causing a change in charge flow

    Answer: Electromagnetic induction causing a change in voltage

    Explanation: Electromagnetic induction causes a change in voltage, which is detected and used to measure electrical current, whereas the other options describe different principles used in different measurement techniques.