MDCAT Physics MCQ #67

A full-wave rectifier converts AC to DC but still has a fluctuating output. How does a filter capacitor reduce this fluctuation?

MDCAT Physics MCQ #67

  1. Question 1

    Q1. A full-wave rectifier converts AC to DC but still has a fluctuating output. How does a filter capacitor reduce this fluctuation?

    • A) It stores charge during peaks and releases during troughs.
    • B) It increases the resistance of the load.
    • C) It blocks DC components.
    • D) It resonates at the AC frequency.

    Answer: It stores charge during peaks and releases during troughs.

    Explanation: The capacitor smooths the output by storing energy. C is incorrect because capacitors pass AC, not DC.