MDCAT Physics MCQ #167

In an AC circuit, the current lags the voltage by 30°. What is the power factor in this circuit?

MDCAT Physics MCQ #167

  1. Question 1

    Q1. In an AC circuit, the current lags the voltage by 30°. What is the power factor in this circuit?

    • A) cos(30°)
    • B) sin(30°)
    • C) tan(30°)
    • D) 0.8

    Answer: cos(30°)

    Explanation: The correct answer is cos(30°) because it represents the real power component. sin(30°) is the imaginary power component, tan(30°) is the power factor angle, and option D is an incorrect assumption.