Courses
Courses for Kids
Free study material
Offline Centres
More
Store

# What is the basic cause of induced EMF.

Last updated date: 13th Jun 2024
Total views: 51.9k
Views today: 0.51k
Verified
51.9k+ views
Hint: Induced EMF, also known as induced electromotive force, electromagnetic induction, and electromotive force induction is defined as the generation of a potential difference in a coil due to the changes in the magnetic flux through it. In more basic words, electromotive Force or EMF is said to be induced when the flux linking with a conductor or coil changes.

Formulae used:
$\mathcal{E} = - \dfrac{{\partial \phi }}{{\partial t}} = - \dfrac{{\partial B.A}}{{\partial t}}$
Where $\mathcal{E}$ is the EMF generated, $B$ is the magnetic field, $A$ is the area vector perpendicular to the surface of the coil and $t$ is time.

Complete step by step solution:
The most basic cause of an induced EMF is change in magnetic flux.
This can happen due to two reasons;
1. Placing the electric conductor in the presence of a changing magnetic field. As the EMF generated depends on either a small change in area vector or magnetic field, therefore this will cause an induction of EMF
2. Placing a current carrying coil that is moving constantly in a stable and static magnetic field. This will cause a change in the area vector and hence, EMF will be generated.