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Illustration Inductive reactance of the coil in AC circuit

<span>Inductive reactance of the coil in AC circuit</span>
Inductive reactance of the coil in AC circuit
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A simple alternating current circuit. A sinusoidal AC voltage \( U_{\text L}(t) \), is applied to an inductor and causes an AC current \( I_{\text L}(t) \).

The coil has an inductive reactance \( X_{\text L} \) that depends on the frequency \( f \) of the AC voltage and the inductance \( L \) of the coil.

In the case of a DC voltage, the inductive reactance \( X_{\text L} \) is zero.