## Inductive Reactance

So far we have looked at the behaviour of inductors connected to DC supplies and hopefully by now we know that when a DC voltage is applied across an inductor, the growth of the current through it is not instant but is determined by the inductors self-induced or back emf…

## Inductors in Parallel

The voltage drop across all of the inductors in parallel will be the same. Then, Inductors in Parallel have a Common Voltage across them and in our example below the voltage across the inductors is given as: VL1 = VL2 = VL3 = VAB …etc In the following circuit the inductors L1, L2 and L3 are all connected together in parallel between the two points A and B. Inductors…

## LR Series Circuit

The first tutorial in this section about Inductors, we looked briefly at the time constant of an inductor stating that the current flowing through an inductor could not change instantaneously, but would increase at a constant rate determined by the self-induced emf in the inductor. In other words, an inductor…

## Inductors in Series

These interconnections of inductors produce more complex networks whose overall inductance is a combination of the individual inductors. However, there are certain rules for connecting inductors in series or parallel and these are based on the fact that no mutual inductance or magnetic coupling exists between the individual inductors. Inductors…

## Mutual Inductance

In the previous tutorial we saw that an inductor generates an induced emf within itself as a result of the changing magnetic field around its own turns. When this emf is induced in the same circuit in which the current is changing this effect is called Self-induction, ( L ). However,…

## Inductance of a Coil

Inductors do this by generating a self-induced emf within itself as a result of their changing magnetic field. In an electrical circuit, when the emf is induced in the same circuit in which the current is changing this effect is called Self-induction, ( L ) but it is sometimes commonly called…

## The Inductor

In our tutorials about Electromagnetism we saw that when an electrical current flows through a wire conductor, a magnetic flux is developed around that conductor. This affect produces a relationship between the direction of the magnetic flux, which is circulating around the conductor, and the direction of the current flowing…