| time integral of the voltage uAB between two terminals A and B of a two-terminal element or n-terminal element
where t0 is any instant before the first supply of electric energy
Note 1 to entry: The total flux in circuit theory is only useful in the case of an inductive element.
Note 2 to entry: The definition of total flux in circuit theory is consistent with the more general definition in electromagnetism given in IEV 121-11-78. The total flux in circuit theory is described by inverting the procedure for calculating the induced voltage.
Note 3 to entry: For an alternating voltage with period , the total flux in circuit theory is always .