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# Relative permeability/Related Articles

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*See also changes related to Relative permeability, or pages that link to Relative permeability or to this page or whose text contains "Relative permeability".*

## Parent topics

- Maxwell equations [r]: Mathematical equations describing the interrelationship between electric and magnetic fields; dependence of the fields on electric charge- and current- densities.
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## Subtopics

- Ampere's equation [r]: An expression for the magnetic force between two electric current-carrying wire segments.
^{[e]} - Ampere's law [r]: The integral of a magnetic field over a closed path is equal to the conduction current through the surface bounded by the path.
^{[e]} - Biot-Savart law [r]: Gives the magnetic field at some distance of an electric current-carrying wire.
^{[e]} - Gyromagnetic ratio [r]: The constant of proportionality between the magnetic moment and angular momentum of an object.
^{[e]} - Magnetic constant [r]: A physical constant in the International System of Units (SI) relating mechanical force and electric current in classical vacuum with a defined value
*μ*= 4_{0}*π*× 10^{−7}N/A^{2}.^{[e]} - Magnetic field [r]: Vector field
**H**caused by permanent magnets, conduction currents, and displacement currents.^{[e]} - Magnetic induction [r]: A divergence-free electromagnetic field, denoted
**B**, determining the Lorentz force upon a moving charge, and related to the magnetic field**H**.^{[e]} - Magnetic moment [r]: A vector property of an object that determines the torque it experiences in a magnetic flux density.
^{[e]} - Magnetization [r]: Magnetic moment per unit volume of a material, denoted
**M**, defined in terms of the magnetic moments of its constituents by**M**=(1/*V*)Σ_{j}**m**_{j}where the magnetic moment**m**of the_{j}*j*-th constituent in the volume*V*is a vector property that determines the torque the object experiences in a magnetic field tending to align its moment with the field.^{[e]} - Relative permittivity [r]: A factor describing the polarizability of a material or medium as a proportionality between an electric displacement and an electric field in a dielectric.
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