If the charging current is negligible, in the case of a single @E01960@, the electrode @C01452@ (\(\text{c.d.}\)) of the @E01927@ flowing through the electrode is related to the flux density of a species B by the equation: \[j = n\ \nu _{\text{B}}^{-1}\ F\ \left(N_{\text{B}}\right)_{e}\] where \(\left(N_{\text{B}}\right)_{e}\) is the normal component of the vector \(N_{\text{B}}\) at the electrode-solution @I03082@, \(n\) is the @C00993@ of the @E01960@ and \(\nu _{\text{B}}\) is the @S06025@ of species B. The ratio \(\frac{n}{\nu _{\text{B}}}\) is to be taken as positive if the species B is consumed in a cathodic reaction or produced in an anodic reaction. Otherwise it is to be taken as negative. With the convention that the normal distance vector points into the electrolytic solution, a cathodic current is then negative, an anodic current positive.