# What is Meant by Inductance

## Introduction to Inductance

The behaviour of the inductor is based on the properties of the magnetic field generated in a coil of wire. In fact, the inductor is basically a coil of wire.

The behavior of the capacitor is based on the properties of the electric field created in a

dielectric (non-conductor) placed between two conductors.

### Self-inductance

Inductance is the name given to the property of a circuit whereby there is an e.m.f. induced into the circuit by the change of flux linkages produced by a current change. The unit of inductance is the henry, H.

When the e.m.f. is induced in the same circuit as that in which the current is changing, the property is called self-inductance, L.

### Mutual inductance

When an e.m.f. is induced in a circuit by a change of flux due to current changing in an adjacent circuit, the property is called mutual inductance, M.

There is a relationship between current and voltage for an inductor, just as there is for a resistor. However, for the inductor, the voltage is related to the *change *in the current, as follows.

Where diL/dt is the rate of change of current in the first coil

The induced e.m.f., E, in a coil of N turns,

Where dՓ/dt is the rate of change of flux in Weber per second.

### Energy stored in an inductor

### Inductors connected in Series and Parallel

In inductors connected in series the total inductance, LT = L1 + L2

In parallel inductors the total inductance, 1/LT = 1/L1 + 1/L2

Here the L1, L2 is the resultant inductance.

## Online Courses in Electrical and Electronic Engineering

Interested in electrical and electronic engineering? Find out more about all the electrical engineering courses we have available by clicking __here__.

__Diploma in Electrical Technology__

__Diploma in ____Renewable ____Energy (Electrical)__

**Diploma in Electrical and Electronic Engineering**

Alternatively, you can view all our __online engineering courses here.__

## Recent Posts

### Kirchhoff’s current and voltage laws

Kirchhoff’s current and voltage laws In our last article, we looked at the principles and operation of a d.c motor. In this article, we’re going to investigate Kirchoff’s current and voltage laws, as well as how to apply them to engineering problems. Kirchoff’s law of current Kirchoff’s law of current states that the algebraic sum […]

### What are the principles of operation of a DC electric motor?

What are the principles of operation of a DC electric motor? In our last article, we looked at the electrical parameters in series and parallel electrical circuits. In this article, we’re going to dive into the principles of operation of a DC electric motor. The motor effect When a current-carrying conductor is placed on a […]

### What are the electrical parameters in series and parallel electrical networks?

What are the electrical parameters in series and parallel electrical networks? In our last article, we looked at the principles of operation of electrical cells. In this article we’re going to move on to the electrical parameters in both series and parallel electrical networks. When we have circuits with more than one resistor, we need […]