Power factor and three-phaseQuestion 1158 of 1506

A load draws 8 kW true power and 10 kVA apparent power. What is the power factor?

  1. 1.25
  2. 0.2
  3. 0.64
  4. 0.8
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Correct answer: 0.8

Power factor = true power / apparent power = 8 / 10 = 0.8.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 11.3: Calculating Power Factor

Practice power factor and three-phase

Questions last reviewed: 18 October 2026