This quantity can be shown to equal magnetomotive force times mu-nought times a material's permittivity times vector potential divided by circuit length, because MMF divided by this quantity gives the reluctance.
This quantity can be shown to equal magnetomotive force times mu-nought times a material's permittivity times vector potential divided by circuit length, because MMF divided by this quantity gives the reluctance. One form of this quantity is the third adiabatic invariant of plasma physics. The constant of proportionality in the equation for the voltage across a Josephson junction is the reciprocal of the smallest (*) quantum of this quantity. This quantity equals the line integral of the magnetic vector potential. The B-field is sometimes called the density of this quantity. According to Faraday's Law of Induction, emf equals the negative time-derivative of this quantity, and one of Gauss' laws demonstrates that it is zero for a closed surface. For 10 points, identify this quantity, denoted phi, which measures the amount of B-field through a surface.
This quantity can be shown to equal magnetomotive force times mu-nought times a material's permittivity times vector potential divided by circuit length, because MMF divided by this quantity gives the reluctance.
magnetic flux [prompt on partial answer, accept phi-sub-B before mention]