Electric Current Density

Current density, abbreviated as J, is the measure of current per unit of cross section. 

 

Current Density Formulas

\(\large{ J =  \frac{I}{A}  }\)
\(\large{ J =  \frac{ E }{ G }  }\)

Where:

Units	English	SI
\(\large{ J }\) = current density	\(\large{I\;R}\)	\(\large{V}\)
\(\large{ A }\) = cross-section area of the conductor	\(\large{in^2}\)	\(\large{m^2}\)
\(\large{ I }\) = current through the conductor	\(\large{\frac{V}{R}}\)	\(\large{I}\)
\(\large{ G }\) = electric conductivity	-	\(\large{\frac{S}{m}}\)
\(\large{ E }\) = electric field	-	\(\large{\frac{V}{m}}\)