Question

Electric field at the surface of a charged conductor is proportional to

• A. Surface charge density
• B. volume of the conductor
• C. volume charge density
• D. surface area of the conductor

Answer 1

The correct option is A Surface charge density

Electric field at the surfaces of charged conductors is $\frac{\sigma }{{\epsilon }_0}.\hat{n}$, where $\hat{n}$ is a unit vector normal to the surface.

We clearly see that electric field is perpendicular to surface charge density ($\sigma$).