Question

Question #8de52

Answer 1

Magnetic permeability is a property of a material on how it responds to magnetic fields.

The higher the permeability, the better is it's response.

Explanation:

Consider two linear materials 1 and 2 with permeabilities `mu_1` and `mu_2` respectively.

For a magnetic intensity `vec H` provided externally, the corresponding magnetic inductions in the mediums are respectively, `vec B_1 = mu_1 vec H` and `vec B_2 = mu_2 vec H`.

Thus, one can see that higher the permeability, the greater is the magnetic induction for a given external magnetising field `vec H`.

The ratio of the permeability of a medium to that of vacuum is called the relative permeability of the medium.

Relative permeability, `mu_r = mu/mu_0` where `mu` is permeability of the medium and `mu_0` is permeability of vacuum.