Electrodynamics MOC

Magnetic dipole moment

The magnetic dipole moment is defined as a pseudovector relating the aligning torque on an object from an externally applied magnetic field such that

and measures the strength of a Magnet, determining the dipole term in the Multipole expansion of the magnetostatic potential. For a closed loop carrying current around an Orientated surface , the magnetic moment is given by

It is useful to introduce the concept of magnetization, so that the magnetic dipole moment due to a volume is given by

Analysis of the Magnetic potential of a magnetized material motivates the surface and volume bound current densities

See also

See Perfect magnetic dipole.

---

tidy | sembr | en