The power factor in an AC circuit is defined as:

Question

Team JKExamLibrary · Accepted Answer

Power factor = cosφ, where φ is phase angle between voltage and current. Also, power factor = R/Z (resistance/impedance) for series circuits, and = true power (W) / apparent power (VA). Thus both (a) and (c) are correct definitions. Memory tip: 'Power factor = cosφ = R/Z = P/S; ideal = 1 (purely resistive)'. This definition question tests AC circuit knowledge, crucial for competitive exams. Always link power factor to energy efficiency: low power factor means more current for same power, increasing losses.

The power factor in an AC circuit is defined as: MCQ with Answer and Explanation

Solution (By JKExamLibrary)

Discuss this Question (0)

Practice More Physics Questions