By Team Aakash Byju's
Both Magnetism and Electricity are discovered to be inter-related leading to ‘Electromagnetism’.
So, Electromagnetism is an interaction between the electric and magnetic fields generated by charged particles.
Further, Electromagnetism can be studied in detail with the help of four laws:
– Biot – Savart law – Lorentz force law – Faraday’s law – Ampere’s law
It gives an equation that describes the magnetic field generated by a constant electric current.
- is the permeability of free space
- Its value is
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It relates the magnetic field to the magnitude, direction, length and proximity of the electric current as:
As per this law, the combination of the magnetic and electric force on a point charge due to electromagnetic fields is given as:
This has 2 laws of electromagnetic induction. They are:
Whenever a conductor is placed in a varying magnetic field, an electromotive force is induced.
If the conductor circuit is closed, a current is induced and this current is called Induced current.
The induced emf in a coil is equal to the rate of change of flux linkage.
It states that the magnetic field created by an electric current is proportional to the size of that electric current with a constant of proportionality equal to the permeability of free space.