reactance
Noun
Meaning
opposition to the flow of electric current resulting from inductance and capacitance (rather than resistance)
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Examples
Above the resonant frequency the capacitive reactance becomes the dominant part of the impedance.
According to psychological reactance theory, a person will perceive their freedom threatened and will react to restore the freedom.
A capacitor in series with the antenna can cancel this reactance to make it resonant, which can be referred to as "electrically shortening" the antenna.
At increasing frequency, on the other hand, the reactance increases and at a sufficiently high frequency the inductor approaches an open circuit.
At low frequency the reactance falls, and for a steady current (zero frequency) the inductor behaves as a short-circuit.
Another way to understand this circuit is through the concept of reactance at a particular frequency: * Since direct current (DC) cannot flow through the capacitor, DC input must flow out the path marked (analogous to removing the capacitor).