Inductor In Alternating Current

In a household circuit the frequency is 60 hz. When an inductor is energized with ac the alternating magnetic fields produced tend to induce circulating currents within the iron core known as eddy currents.

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An inductor can be used in circuits to block or reshape alternating current or a range of sinusoidal frequencies and in this role an inductor can be used to tune a simple radio receiver or various types of oscillators.

Inductor in alternating current. In the first case we see that a constant current flows through this inductor and the bulb connected to it glows brightly. Inductors are widely used in alternating current ac electronic equipment particularly in radio equipment. But in the second case the bulb does not glow as brightly as the first one this happens because the inductor opposes the flow of alternating current.

These electric currents in the iron core have to overcome the electrical resistance offered by the iron which is not as good a conductor as copper. They are used to block ac while allowing dc to pass. When you have alternating current it resists the change of the current that passes through it.

Phase angle of the alternating current in an inductor if two equal periodic signals are in phase maximum and minimum values match. Direct current dc circuits involve current flowing in one direction. Inductors designed for this purpose are called chokes.

Hence the bulb is dim. Alternating current in a simple inductive circuit is equal to the voltage in volts divided by the inductive reactance in ohms just as either alternating or direct current in a simple resistive circuit is equal to the voltage in volts divided by the resistance in ohms. If a signal is delayed relative to another until they return to match these maximum and minimum values it is said to have a phase shift of 3600.

The inductor tends to resist the changes to the current that passes through it. If you have a constant current it does nothing behaves like a wire. Any inductor resists a change in current as a result of lenzs law.

An inductor resists the flow of an alternating current as a result of its inductance. In alternating current ac circuits instead of a constant voltage supplied by a battery the voltage oscillates in a sine wave pattern varying with time as v v o sin wt. Hence the inductor simply behaves like a coil of wire.

The degree to which the inductor impedes the flow of current is due to its inductive reactance. As the frequency or alternator shaft speed is increased in an ac system an inductor will offer greater opposition to the passage of current and vice versa.

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