Question

Define Magnetic Susceptibility. Mention its unit.

Answer 1

The above problem is based on the concept of magnetism. The magnetism is the property of the material due to which it attracts any metallic object towards itself. The magnetism may be permanent or temporary. The permanent magnets are manufactured either artificially or naturally. The temporary magnetism arises due to passing of the current in the conductors.

Complete step by step answer
The magnetic susceptibility is the property which shows the behavior of diamagnetic and paramagnetic material towards magnetization. If a magnetic material becomes easily magnetized then it is said to be highly magnetic susceptible otherwise. If the magnetization of the material happens with difficulty then magnetic material is called low magnetic susceptibility.
Mathematically the magnetic susceptibility is equal to the ratio of the intensity of magnetization with magnetic field strength. It is given by the following formula:
${\chi _m} = \dfrac{I}{H}$
The Magnetic Susceptibility is the unit less quantity.
The numerical value of Magnetic Susceptibility is negative for diamagnetic material and positive for paramagnetic materials. The value of the Magnetic Susceptibility for ferromagnetic material is very large.
The magnetic susceptibility in terms of the relative magnetic permeability is given by the formula as:
${\chi _m} = {\mu _r} - 1$

Additional information The magnetic substances can be divided into three types. First is the diamagnetic material, second is paramagnetic material and third is the ferromagnetic material.

Note: The intensity of magnetization and magnetic field strength are the vector quantities. The intensity of magnetization is not proportional to magnetic field strength for ferromagnetic material, but remains proportional for paramagnetic and diamagnetic material.