Question #8de52

Mar 26, 2017

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, ${\mu}_{r} = \frac{\mu}{\mu} _ 0$ where $\mu$ is permeability of the medium and ${\mu}_{0}$ is permeability of vacuum.