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An italic capital X, the imaginary part of impedance.
Also known as: Reactance, Inductive reactance, Capacitive reactance
Reactance is the part of impedance that stores energy rather than dissipating it, and its sign says which kind: positive for an inductor, negative for a capacitor. It changes with frequency, which is the entire basis of filter design.
Denotes reactance, the imaginary component of impedance, measured in ohms.
Contexts: Laboratory
Is positive for inductive and negative for capacitive elements, and the two cancel exactly at resonance.
Contexts: Laboratory
Varies with frequency, unlike resistance, which is what makes frequency-selective circuits possible.
Contexts: Laboratory
An italic capital letter X, two diagonal strokes crossing at their midpoints.