Current Density

The current density is how much Current passes through an area:

Definition §

Formula §

Note

$$J=\frac{I}{A}={\rho }_e{v}_{drift}\times q_e$$

Terms §

• $I$ = Current (in $A$)
• $A$ = Area (in $m^2$)
• $J$ = Current density (in $A/m^2$)

We can define electron current density, $J$, using purely particle properties, which can be experimentally found in a material. This is proven in Drude Model of Conduction