AC theoryQuestion 1473 of 1506

A capacitor of 20 µF is connected to a 60 Hz supply. What is its capacitive reactance?

  1. 133000 Ω
  2. 0.133 Ω
  3. 133 Ω
  4. 833 Ω
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Correct answer: 133 Ω

XC = 1 ÷ (2πfC) = 1 ÷ (2 × 3.1416 × 60 × 20 × 10⁻⁶) = 133 Ω.

Source: Computed, 4.2: AC Capacitor Circuits

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Questions last reviewed: 18 October 2026