vimwiki/tech/Impedance.wiki

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= Impedance =
Ac voltage and current are often in phase, in something such as a resistor.
However, they can become out of phase when passing through a [[Capacitor]] or
[[Inductor]]. Capacitors are resistant to changes in voltage, causing voltage
and current to get out of sync. Inductors are resistant to chagnes in current,
causing voltage to get out of sync.
This getting out of sync is called reactance. The total reactance is called
Impedance. Impedance is measured in Ohms, shown as Z