MDCAT Physics MCQ #64

Why does a capacitor in an AC circuit exhibit a leading current phase?

MDCAT Physics MCQ #64

  1. Question 1

    Q1. Why does a capacitor in an AC circuit exhibit a leading current phase?

    • A) Charge accumulates before voltage reaches maximum.
    • B) The dielectric material stores energy after voltage peaks.
    • C) Current flows only when the voltage is constant.
    • D) Capacitance blocks high-frequency signals.

    Answer: Charge accumulates before voltage reaches maximum.

    Explanation: Current leads voltage as charge builds before voltage peaks. D is incorrect because capacitors pass AC, not block it.