average current density

The average current density, $j$ , is defined by

$j = A −1 ∫ A j x ⁢ d A$

where $A$ is the electrode area, $j x$ is the local current density and $dA$ is an infinitesimal surface element.

Source:

PAC, 1981, 53, 1827 (Nomenclature for transport phenomena in electrolytic systems) on page 1836

Also contains definition of: local current density