The force that produces magnetic flux.
Line integral of magnetic field intensity between any two points. Force that tends to produce a magnetic field and is the magnetic analog to electromotive force.
The magnetic potential difference between any two points. Analogous to voltage in electrical circuits. That which tends to produce a magnetic field. Commonly produced by a current flowing through a coil of wire. Measured in Gilberts (C.G.S.) or Ampere Turns (S.I.).