Question

At which area is the surface charge density maximum on a conductor?

• A. The beginning point of conduction for the conductor
• B. Body of the conductor
• C. Sharp edges and points
• D. It is uniform everywhere

Answer 1

The correct option is C

Sharp edges and points

Surface charge density is maximum at sharp edges and points. The reason is that, at sharp edges and points, charges get accumulated in order to maintain an equipotential nature. It means the voltage or the potential is equal across the surface of the conductor. This happens only if the charges concentrate.