Inductor In A Ac Circuit

October 24, 2019

Inductive reactance which is given the symbol x l is the property in an ac circuit which opposes the change in the current. Review recall that induction is the process in which an emf is induced by changing magnetic flux.

Ac Circuits

Variable Inductor Ac Circuits Electronics Textbook

086009rr Inductors In Ac Circuits 1 An Inductor Rated At

If an ac circuit contains only resistance the current and voltage are in phase figure 5.

Inductor in a ac circuit. Capacitor and inductor oppose current in ac circuit because of inertia of electron motion which is called capacitive and inductive reactance respectfully. You saw in unit 3 that resistors behave pretty much the same way in ac circuits as they do in dc circuits. Therefore inductors and capacitors complement each when used together in an electronic circuit.

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. I have read that inductors oppose change in current flowing in the ac circuit. Capacitors and inductors in ac circuits in thi unit well turn our attention to the behavior of capacitors and inductors in ac circuits.

Inductive reactance is the opposition that an inductor offers to alternating current due to its phase shifted storage and release of energy in its magnetic field. The power consumed is equal to i e. For example when current starts increasing it induces an emf in the opposite direction to oppose the current from rising.

Reactance is symbolized by the capital letter x and is measured in ohms just like resistance r. A resistor inductor circuit rl circuit consists of a resistor and an inductor either in series or in parallel driven by a 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.

Resistance and inductance in an ac circuit. Even though the polarity of the voltage changes and the current reverses positive power is consumed. Ac inductance and inductive reactance the opposition to current flow through an ac inductor is called inductive reactance and which depends lineally on the supply frequency inductors and chokes are basically coils or loops of wire that are either wound around a hollow tube former air cored or wound around some ferromagnetic material iron.

Reactance and resistance combine to impedance the overall opposition to ac current.