Reaktancia

Kapacitná reaktancia ${\displaystyle \scriptstyle {\mathrm {X} _{C}}}$ je nepriamo úmerná frekvencii signálu ${\displaystyle \scriptstyle {f}}$ a kapacite ${\displaystyle \scriptstyle {C}}$.

${\displaystyle \mathrm {X} _{C}={\frac {1}{\omega C}}={\frac {1}{2\pi fC}}\quad }$

Indukčná reaktancia ${\displaystyle \scriptstyle {\mathrm {X} _{L}}}$ je priamo úmerná frekvencii signálu ${\displaystyle \scriptstyle {f}}$ a indukčnosti ${\displaystyle \scriptstyle {L}}$.

${\displaystyle X_{L}=\omega L=2\pi fL\quad }$