EngineeringToolkit

Impedance of Capacitor Formula

The opposition to current flow in a capacitor in an AC circuit.

Formula

Zc = 1/(2πfC)

Discipline: Electronics Engineering. Result unit: Ω.

Variables and units

  • Zc — Impedance (Ω): Capacitive impedance
  • f — Frequency (Hz): Signal frequency
  • C — Capacitance (F): Capacitance