## Why permeability of diamagnetic materials is lesser than 1

Relative magnetic permeability of diamagnetic materials is always less than unity that is

μr < 1

Explanation: Continue reading “Why permeability of diamagnetic materials is lesser than 1”

## Relative magnetic permeability

Relative magnetic permeability is defined as the ratio of permeability of medium (μ) to the permeability of free space (μ0)

μr = μ/μ0

or                                 μr = B/H/(B0/H)

or                                 μr = B / B0

is permeability of free space.

## Magnetic permeability

Magnetic permeability is defined as the degree to which the magnetic lines of force can penetrate or permeate the material. It can also be defined as the ability of the material to permit the passage of magnetic lines of force through it.

As the magnetic induction is proportional to the magnetising field

B proportional H

or                     B = μH

where μ is called the permeability of the medium (material)