MDCAT Physics MCQ #76

Why does a diode in a half-wave rectifier pass only the positive half-cycle?

MDCAT Physics MCQ #76

  1. Question 1

    Q1. Why does a diode in a half-wave rectifier pass only the positive half-cycle?

    • A) It conducts when the anode is at higher potential than the cathode.
    • B) It blocks DC components in the signal.
    • C) It amplifies voltage during the negative half-cycle.
    • D) It reduces the frequency of the AC signal.

    Answer: It conducts when the anode is at higher potential than the cathode.

    Explanation: Diodes conduct unidirectionally based on potential difference. B is incorrect because rectification produces DC.