If two oppositely charged point charges are separated, with a fairly large circular (spherical) conductor between them, then the equipotential surfaces will kind of wrap around the contour of the conductor, correct? And the electric field would look like it does for a normal dipole, with the Efield lines crossing through the conductor, but none actually inside? And vice versa for an insulator? Perpendicular equipotentials and electric field lines which avoid the insulator? I feel like this is right, but my (slightly distracted) TA told me the opposite. Thanks a lot.