# Category Physics Class – 12

## 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…

## Motional EMF in rotating rod Class 12

In this article, we will derive an expression for induced emf in a rod rotating in a uniform magnetic field. So let’s get started… Motional EMF in rotating rod Class 12 Consider a metallic rod $OA$ of length $l$, which…

## Relation between induced charge and change in magnetic flux

This will be a short article, so without talking too much let’s get started… Relation between induced charge and change in magnetic flux According to the faraday’s law, the induced EMF is given as $${\mathcal {E}}=\frac{\Delta \phi}{\Delta t}$$ If…

## Motional EMF, and energy consideration class 12

Motional EMF means EMF induced at the endpoint due to the motion of the conductor in an external magnetic field. Due to the motion of the conductor, if EMF is induced then this EMF will also induce a current in…

## Motional EMF from Lorentz force class 12

In this short piece of article, we will discuss and derive an expression for motional EMF from Lorentz force class 12, so let’s get started… Motional EMF from Lorentz force As we know that a conductor has large numbers of…

## Fleming’s right-hand rule (for generators)

From the motion of the conductor in a magnetic field, we know that when a conductor moves in a magnetic field (perpendicular to the motion of the conductor) an EMF is induced across the ends of the conductor called motional…

## Motional EMF from Faraday’s law | definition, formula derivation

According to Faraday’s law, Whenever the magnetic flux linked with the coil changes, an EMF is induced in the coil called induced EMF. Due to this induced EMF, a current is set up in the coil called induced current. And…