Capacitive reactance X C {\displaystyle \scriptstyle {X_{C}}} is inversely proportional to the signal frequency f {\displaystyle \scriptstyle {f}} (or angular frequency ω) and the capacitance C {\displaystyle \scriptstyle {C}} .
Kapacitná reaktancia X C {\displaystyle \scriptstyle {\mathrm {X} _{C}}} je nepriamo úmerná frekvencii signálu f {\displaystyle \scriptstyle {f}} a kapacite C {\displaystyle \scriptstyle {C}} .