MDCAT Physics MCQ #161

In an AC circuit, the voltage across the resistor leads the current by 90 degrees. What is the power factor in this circuit?

MDCAT Physics MCQ #161

  1. Question 1

    Q1. In an AC circuit, the voltage across the resistor leads the current by 90 degrees. What is the power factor in this circuit?

    • A) 1
    • B) cos(θ)
    • C) sin(θ)
    • D) tan(θ)

    Answer: cos(θ)

    Explanation: The correct answer is cos(θ) because it represents the real power component. sin(θ) is the imaginary power component, and tan(θ) is the power factor angle.