What is a real inductor?

A real inductor has both an inductance and a resistance. We draw a real inductor as an ideal inductor connected in series to an ideal resistor in a circuit diagram.

How does a real inductor differ from an ideal component?

Real components never have exactly their specified values. Real circuit elements deviate from the ideal equations when voltage or current are taken to extremes.

How is an ideal inductor obtained?

An inductor is called an ideal inductor when there is no resistance and only inductance such that there is no power dissipated within the coil. Stay tuned with BYJU’S to learn more about other concepts such as types of inductor.

Do inductors have polarity?

Inductors don’t have a functional polarity and work equally in either direction, so it’s not important in most circuits.

What is ideal inductor?

An ideal inductor is an electrical component that has no resistance and no capacitance and has only inductance. Since an ideal inductor has no resistance it will not radiate or dissipate any energy. Inductance depends on the shape of the coil, the number of turns, and the permeability of the core.

Is there a perfect inductor?

The perfect inductor has reactance without any resistance. In other words, the real component of its impedance would be zero. Loss of power as heat within the inductor is thus also zero. The perfect inductor presents no impedance to a constant current (i.e. DC), yet opposes any slightest change of current.

Why does inductor have no resistance?

With a steady state DC current flowing through the inductor and therefore zero induced voltage across it, the inductor acts as a short circuit equal to a piece of wire, or at the very least a very low value resistance.

Does direction matter for inductor?

Sometimes there is a mark on inductors to distinguish direction. If the inductor structure is not perfectly symmetric, properties will change with the mounting direction. We therefore leave a mark so that the user will know the inductor has directionality.