Capacitive Reactance

X_{C} = \frac{1}{ω C}

Opposition to AC current flow by a capacitor.

Variables

X_C

Capacitive reactance

Opposition to AC by capacitor

Angular frequency

ω = 2πf

rad/s

Capacitance

From I = C(dV/dt) for V = V₀sin(ωt), X_C = V₀/I₀ = 1/(ωC).

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