MDCAT Physics MCQ #69

A radio tuner uses an LC circuit to select frequencies. How does resonance help in this process?

MDCAT Physics MCQ #69

  1. Question 1

    Q1. A radio tuner uses an LC circuit to select frequencies. How does resonance help in this process?

    • A) It absorbs all frequencies except the resonant one.
    • B) It amplifies the signal at the resonant frequency.
    • C) It increases the resistance at the desired frequency.
    • D) It blocks high-frequency noise.

    Answer: It amplifies the signal at the resonant frequency.

    Explanation: Resonance maximizes current at the target frequency. C is incorrect because resistance remains unchanged.