current density

https://doi.org/10.1351/goldbook.C01452
The current density \(j_{\text{B}}\) of a species B in a given point of the solution is obtained by multiplying the flux density of that species at the given point by the @F02325@ \(F\) and by the @C00993@ \(z_{\text{B}}\) of the species: \[j_{\text{B}}=z_{\text{B}}\ F\ N_{\text{B}}\] where \(j_{\text{B}}\) is a vector which indicates the direction in which the charges transported by the species B flow and which gives the number of these charges going through a plane oriented perpendicular to the vector, divided by time and by area, and \(N_{\text{B}}\) is the flux density of a minor @C01281@ of the solution with respect to a fixed frame of reference.
See also:
electric current density
Source:
PAC, 1981, 53, 1827. (Nomenclature for transport phenomena in electrolytic systems) on page 1833 [Terms] [Paper]