Field of a static magnetic dipole


A magnetic dipole is a closed circulation of electric current. A simple example of this is a single loop of wire with some constant current through it.Dipoles can be characterized by their dipole moment.
The far-field strength of a dipole magnetic field is related to the distance from the center, the magnetic latitude and the dipole moment (VADM=virtual axial dipole moment).

Related formulas


BStrength of the field (T)
μ0permeability of free space (µ0 = 4π×10−7 ) (H/m)
m dipole moment (J/T)
rDistance from the center (m)
λThe magnetic latitude (degrees)