## Conducting Sphere

## Conducting Sphere

This verification example considers a perfectly conducting sphere
placed between two charged capacitor plates. An axisymmetric solution
for the electrostatic potential is compared with a full 3D one, and
verified against the analytical solution *U(x _{i}) =
E_{0}*(r^{3}/x_{i}^{2} -
x_{i})*, where the electrical field is the potential …

## Spherical Capacitor

## Spherical Capacitor

Model of an electrostatic spherical capacitor. The example makes use
of a 2D axisymmetric approximation with three subdomains, where an
electric charge is applied between the middle insulating layer. For
this configuration the analytic capacitance can be calculated as
*4*πε _{r}ε_{0}/dr*, where

*dr*is the thickness of the …