What is the equation of displacement current

The displacement current

 

 

 

 

The line current settles in the plate capacitor as a displacement currentaway. The equality of and applies provided that the dielectric between the capacitor plates has no conductivity. Otherwise, a proportional line current is added to the displacement current. The current densities jv in the capacitor and jL. in the conductor are generally different, since the line cross-section is not the same as the cross-section A of the capacitor.

 

 

 

 

With the displacement current density

 

 

the total current density expands at a certain cross-section

 

 

This extends Maxwell's equation to

 

 

or in integral form (Oerstedt’s law)