Does Inductor Lead Or Lag
The phase relationship of inductance components in AC circuits is as follows: When current flows through an inductance component, the inductance generates a back electromotive force (EMF) that attempts to oppose the change in current. Therefore, the voltage across the inductance component leads the current, rather than lags behind it.
Specifically, in a pure inductance circuit, if the current varies in a sinusoidal waveform, the voltage across the inductance will lead the current by 90 degrees (or π/2 radians). This means that, if you observe the current and voltage waveforms, the voltage waveform will reach its peak before the current waveform.
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