Two parallel circular conductors both carry the current
in the same direction. The circles lie parallel to the
-
plane and both have radius
. The centers of the circles are at
and
. According to the cylindrical symmetry the observation points in the
-
plane can be taken at
. Each circular conductor is parametrized by the angle
, running from
to
. The three quantities
,
,
are displayed for the five independent variables
,
,
,
,
. The observation points are described by
,
and the source by
,
,
. Units used are in the CGS system
