Internal resistance Trends

A Magnetic dipole is a phenomenon in electromagnetism in which an electric current's closed loop or a pair of poles is reduced to zero size while keeping the magnetic moment constant. It is the magnetic counterpart of an electric dipole. The strength of a magnetic dipole moment is given by the formula m = NIA and is measured in Ampere meter square. A magnetic dipole moment is the measure of an object's tendency to align with a magnetic field. A magnet is called a magnetic dipole because it has two poles, north and south. An arbitrary oriented magnetic dipole can be presented as a sum of two dipoles- a vertical and a horizontal one. A wire loop with constant current passing through it is a typical example of a magnetic dipole.