What is electromagnetic induction in physics?
When a moving conductor(like copper or iron) placed in the magnetic field,then an emf is induced in an electrical conductor.
This is called electromagnetic induction.
Can we produce electricity by magnetic field?
In order to drive the current , an application of voltage(emf)
is compulsory. Without an application of voltage(emf),
there is no electricity.
Conclusion: In order to drive current,application of voltage is needy.
Where we get voltage?
How can we apply a moving force to very small electrons?
There are number of methods to produce voltage(emf). An ****electromagnetic induction**** is one of the greatest method used to produce electricity.
When a moving conductor(like copper or iron) placed in the magnetic field , then magnetic lines cuts the moving conductor.
If magnetic lines cuts the moving conductor ,
then emf(voltage) is induced in the conductor which further drives
the current when closed circuit is provided.
When a stationary conductor is placed in between moving magnets , an emf is induced in the conductor.