# Category Electromagnetic induction

## Transformer class 12 – Definition, Types, Working Principle, and Constructions

Transformers are electrical devices that are widely used to transfer electrical energy from one circuit to another. The primary function of a transformer is to change the voltage level of an alternating current (AC) power supply to suit the requirements…

## Grouping of inductors | inductors in series & parallel, class 12

In this article, we will discuss the grouping of inductors i.e. inductors in series & parallel, class 12. So let’s get started… Grouping of inductors When two and more inductors are combined in an electrical circuit to give an equivalent…

## Derivation for mutual inductance of two long co-axial solenoids

In this article, we will derive an expression for the mutual inductance of two long coaxial solenoids. So let’s get started… What is mutual inductance? Mutual inductance is a phenomenon in which an emf is induced in the secondary coil…

## Mutual inductance – definition, formula, units, and dimensions

Hmmm… Mutual inductance has more self-respect than self-inductance because it has a wide range of applications in electrical engineering. Mutual inductance is the main working principle of generators, motors, transformers, etc. Self-inductance induces an emf across the coil itself. But…

## Formula for energy stored in the inductor, class 12

In this short piece of article, we will derive a formula for energy stored in the inductor. So let’s get started… Formula for energy stored in the inductor derivation Let’s take an inductor with some inductance, if anyone increases the…

## Self-inductance of a long solenoid class 12

In this short piece of article, we will obtain an expression of self-inductance of a long solenoid. So let’s get started… Expression for Self-inductance of a long solenoid Self-inductance of a long solenoid. Consider a long solenoid of length $l$…

## Self-inductance | definition, formula, units, and dimensions

Self-inductance is usually just called inductance. From the knowledge of inductance, we know that whenever the current change occurs, it induces an EMF in the conductor such that it opposes the change in the current. From Lenz’s law, the induced…

## Inductance – definition, formula, units, and dimensions

Inductance is just another version of Lenz’s law. If anyone knows what is Lenz’s Law? then for him, understanding inductance becomes easier. In this article, we will talk about inductance – definition, formula, units, and dimensions, so without any delay…

## What are eddy currents? – definition, causes, applications, and properties

Take a rotating metal disk, and try to rotate it. You will find it is easier to rotate but try to rotate it in between the magnetic poles. You will experience that it is not the same feeling as above.…

## Methods of producing induced emf Class 12

There are various methods of producing induced emf in any electrical circuit. From Faraday’s law of electromagnetic induction, we know that an EMF can be induced in any electrical circuit by changing magnetic flux w.r.t time. In this article, we…