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
What are the principles of operation of electrical cells?
What are the principles of operation of electrical cells? In our last article, we looked at the basic electrical parameters in D.C. circuits. In this article, we’re going to move on to the principles of operation of electrical cells. We’ll look at the different types of cells and batteries, their mechanisms, and their applications. What […]
How can we calculate basic electrical parameters?
How can we calculate basic electrical parameters? In our last article, we looked at how we can select the best engineering material for the task. In this article, we’re going to move on to basic electrical parameters in D.C. circuits. As an engineer, we need to be able to define these key terms and apply […]
How can we select engineering materials?
How can we select engineering materials? In our previous article, we looked at elastic and magnetic hysteresis. In this article, we’re going to look at how we can select engineering materials. In other articles, we have previously looked at the different materials and their properties. However, it’s important that engineers understand how we can go […]