Magnetic flux
Magnetic flux, usually denoted by
Greek letter Φ, is a measure of quantity of
magnetism, taking account of the strength and the extent of a
magnetic field. The
flux through an element of
area perpendicular to the direction of magnetic field is given by the product of the magnetic field density and the
area element. More generally, magnetic flux is defined by a
scalar product of the magnetic field density and the area element vector. The
Maxwell's equations in the absence of
magnetic monopoles requires that the magnetic flux through a closed surface is zero. The
SI unit of magnetic flux is the
weber.
Related concepts: gauss, henry, tesla, maxwell, oersted, weber, volt, and B-Field.
See also: Magnetic flux quantum