Question

The surface charge density of a thick metal plate is sigma the electric field near the surface is

Answer 1

Answer:

Explanation:

According to gauss theorem

E= q/ε

Here q is the charge of the conductor

now, σ=q/ds

      q=σds

Hence, E.dscosθ = σds/ε

As the unit vector is normal to to the surface in the upward direction. Hence the angle between the electric field and area vector is 0

E.ds = σds/ε

E=σ/ε