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 Most interestingly, there may be large regions
of space where there is no conduction current, but there is only a
displacement current due to time-varying electric fields In such a
region, we expect a magnetic field, though there is no (conduction)
current source nearby