Electrical mathQuestion 152 of 1506

A coil with a reactance of 8 Ω carries 5 A. What is its reactive power?

  1. 40 vars
  2. 320 vars
  3. 200 vars
  4. 13 vars
Show answer

Correct answer: 200 vars

Reactive power = I² × X = 25 × 8 = 200 vars.

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

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Questions last reviewed: 18 October 2026