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).
|B||Strength of the field (T)|
|μ0||permeability of free space (µ0 = 4π×10−7 ) (H/m)|
|m||dipole moment (J/T)|
|r||Distance from the center (m)|
|λ||The magnetic latitude (degrees)|