Static charge moves to the outside. This sounds stupid, "static charge moves".
Field is zero on the inside.
- Faraday cage, electrostatic shielding, etc.
Field perpendicular to surface.
Charge collects at points. This leads to a phenomena known as corona discharge. "Corona" from the latin word for crown.
|Corona discharge from a wire.|
Corona discharge is a useful way to passively eliminate charge.
Lightning rods on an Airplane Wing.
Lightning rods on an Electric Power Substation