Red Seal Electrician Practice
AC theoryQuestion 1471 of 1506

A capacitor of 80 µF is connected to a 60 Hz supply. What is its capacitive reactance?

  1. 208 Ω
  2. 66.3 Ω
  3. 104 Ω
  4. 33.2 Ω
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Correct answer: 33.2 Ω

XC = 1 ÷ (2πfC) = 1 ÷ (2 × 3.1416 × 60 × 80 × 10⁻⁶) = 33.2 Ω.

Source: Computed, 4.2: AC Capacitor Circuits

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Questions last reviewed: 18 October 2026