Power factor and three-phaseQuestion 491 of 1506

In an impedance triangle, which quantity is the hypotenuse?

  1. Resistance
  2. Reactance
  3. Current
  4. Impedance
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Correct answer: Impedance

Resistance is on the base and reactance on the side.

Source: Trigonometry and Single Phase AC Generation for Electricians (Flinn), 1.6: Power and Impedance Triangles

Practice power factor and three-phase

Questions last reviewed: 18 October 2026