MDCAT Physics MCQ #79

A parallel LC circuit at resonance acts as an open circuit. Why is this behavior observed?

MDCAT Physics MCQ #79

  1. Question 1

    Q1. A parallel LC circuit at resonance acts as an open circuit. Why is this behavior observed?

    • A) Inductive and capacitive currents cancel each other.
    • B) The resistor’s impedance dominates.
    • C) Voltage across the capacitor becomes zero.
    • D) Energy is stored in the resistor.

    Answer: Inductive and capacitive currents cancel each other.

    Explanation: At resonance, X_L = X_C, canceling current. B is incorrect because resistors do not dominate in LC circuits.