# Faraday’s Law of Induction Simply Explained

## Basic Principle

Did you know that electrons act like tiny little magnets? Because each and every electron has a magnetic dipole moment. You don’t need to understand what is a magnetic dipole moment. The only important fact here is electrons act like tiny magnets, therefore like poles repel, opposites attract.

And then take a good conductor and a magnet. Next, move the magnet around the conductor, and it’ll cause electrons (the charge) to move. Congratulations, you have made electricity. But something seems wrong here. Instead of calling that it that we produce current or voltage, we usually call that EMF (electromotive force) is dynamically induced.

This is the basic principle that has used in practical electrical generators.

## So, why is EMF (electromotive force)?

EMF is the force that drives electrons, and in other words, it’s is the measure of energy that it gives to each coulomb of charge. However, EMF is not actually a force or an energy. The word “force” is somewhat misleading, it is the potential to provide energy.

Or we can say that it’s the net voltage which can be generated using the power source.

The units of EMF is also volts.

## So, why can’t we just call EMF as the potential difference?

Potential difference is the amount of energy used by the one coulomb of charge while the EMF is the measure of energy that it gives to each coulomb of charge.

However, EMF is equal to the terminal potential difference under one condition. If there is no current flow, EMF is equal to the terminal potential difference.