MDCAT Physics MCQ #91

Why does a diode in a half-wave rectifier only conduct during half the AC cycle?

MDCAT Physics MCQ #91

  1. Question 1

    Q1. Why does a diode in a half-wave rectifier only conduct during half the AC cycle?

    • A) Reverse bias blocks current flow
    • B) Diode melts during negative half
    • C) AC amplitude remains below threshold
    • D) Load resistance limits conduction

    Answer: Reverse bias blocks current flow

    Explanation: Diode conducts only during forward bias. Option B incorrectly suggests physical damage as the reason.