MDCAT Physics MCQ #860

A researcher uses a Hall effect sensor to measure the pressure in a gas. What is the principle behind the sensor's functioning?

MDCAT Physics MCQ #860

  1. Question 1

    Q1. A researcher uses a Hall effect sensor to measure the pressure in a gas. What is the principle behind the sensor's functioning?

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

    Answer: Magnetic fields causing a change in voltage

    Explanation: Magnetic fields cause a change in voltage, which is detected and used to measure pressure, whereas the other options describe different principles used in different sensors or measurement techniques.