next up previous contents
Next: Inductive Impedance Up: Sinusoidal Sources and Complex Previous: Resistive Impedance

Capacitive Impedance

Kirchoff's voltage law for a voltage source and capacitor is


Solving this equation gives

For DC circuits and hence . The capacitor acts like an open circuit (infinite resistance) in a DC circuit.

Doug Gingrich
Tue Jul 13 16:55:15 EDT 1999