MDCAT Physics MCQ #70

In an AC circuit with only resistance, voltage and current are in phase. Why does a capacitor or inductor disrupt this phase relationship?

MDCAT Physics MCQ #70

  1. Question 1

    Q1. In an AC circuit with only resistance, voltage and current are in phase. Why does a capacitor or inductor disrupt this phase relationship?

    • A) They store and release energy periodically.
    • B) They dissipate energy as heat.
    • C) They increase the circuit’s resistance.
    • D) They generate a constant magnetic field.

    Answer: They store and release energy periodically.

    Explanation: Reactance stores energy temporarily, causing phase shifts. B is incorrect because reactors do not dissipate energy.