In all respects, the displacement current has the same physical
effects as the conduction current In some cases, for example, steady
electric fields in a conducting wire, the displacement current may
be zero since the electric field E does not change with time In other
cases, for example, the charging capacitor above, both conduction
and displacement currents may be present in different regions of
space In most of the cases, they both may be present in the same
region of space, as there exist no perfectly conducting or perfectly
insulating medium