The term Absolute Permeability (𝜇ₐ) of a material is the product of permeability of free space 𝜇₀ ( = 4𝜋 ⨯ 10⁻⁷ henry/meter) and the Relative Permeability 𝜇ᵣ .
i.e.
Relative Permeability (𝜇ᵣ) of a medium is defined as the force between two poles when placed at a fixed distance in vacuum to the force between them at the same distance in that medium.
The Relative Permeability is a pure numerical number and therefore has no units. As mentioned above, for air and non-magnetic materials, its value is unity.
i.e.
Relative Permeability (𝜇ᵣ) of a medium is defined as the force between two poles when placed at a fixed distance in vacuum to the force between them at the same distance in that medium.
The Relative Permeability is a pure numerical number and therefore has no units. As mentioned above, for air and non-magnetic materials, its value is unity.
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