Inductor In An Ac Circuit

This response makes sense because at high frequencies lenzs law suggests that the impedance due to the inductor will be large. Xl2pi fl x l is inductive reactance w f is frequency hz l is inductance f.

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Inductive reactance which is given the symbol x l is the property in an ac circuit which opposes the change in the current.

Inductor in an ac circuit. Since the positive and negative power cycles are equal in magnitude and duration over time the inductor releases just as much power back to the circuit as it absorbs over the span of a complete cycle. It will mess with the alternating currents ac. The inductive reactance x l of a circuit is a measure of this opposition.

The inductor is similar to the opposite of a capacitor. Like capacitors inductors in ac circuits differ from resistors in two crucial ways. Now in an ac circuit the opposition to the current flowing through the coils windings not only depends upon the inductance of the coil but also the frequency of the applied voltage waveform as it varies from its positive to negative values.

Current and voltage in an inductor are not in phase with each other. It means that the inductor is releasing power back to the circuit while a positive power means that it is absorbing power from the circuit. Therefore the rms current will be v rms x l and the current lags the voltage by almost 90.

The amount of opposition an inductor creates in an ac circuit is dependent upon the inductance value and the frequency of the voltage source. In our tutorials about capacitors in ac circuits we saw that in a purely capacitive circuit the current i c leads the voltage by 90 o. Inductors in an ac circuit inductive reactance.

The magnitude of this opposing response or force of an inductor to an ac or alternating current is called the reactance of the inductor. Its like a bully component. Instead of having a resistance an inductor in an ac circuit has something called an inductive reactance.

When z xl the circuit is almost equivalent to an ac circuit with just an inductor. However in an alternating current circuit which contains an ac inductance the flow of current through an inductor behaves very differently to that of a steady state dc voltage. In series it will resist alternating currents ac and let direct currents dc flow free.

An inductor will basically behave and produce a short across itself when subjected to a dc while offer an opposing or restricting response when applied with an ac.

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