This capacitive reactance calculator finds the reactance of a capacitor using Xc = 1 / (2πfC). Enter the frequency in hertz and the capacitance in microfarads.
Capacitive Reactance Calculator
Formula
Xc = 1 / (2πfC)
How to Use This Calculator
- Enter the frequency in hertz.
- Enter the capacitance in microfarads (µF).
- Click Calculate to get the reactance in ohms.
Worked Example
For f = 50 Hz and C = 100 µF: Xc = 1 / (2π × 50 × 100×10−6) ≈ 31.8 Ω.
Frequently Asked Questions
What is capacitive reactance?
Capacitive reactance is the opposition a capacitor offers to alternating current, measured in ohms; it decreases as frequency increases.
What is the formula for capacitive reactance?
Xc = 1 / (2 x pi x f x C), where f is frequency in Hz and C is capacitance in farads.
Does reactance depend on frequency?
Yes. Capacitive reactance is inversely proportional to frequency, so it falls as frequency rises.