net charge on a conductor

If the net charge on a conductor is zero, must the charge density be zero at every point on the surface of the conductor? Why or why not?

Consider a uniformly charged sphere with a hole. Calculate the electric field at the center of the sphere.

Consider a uniformly charged sphere with a hole. Calculate the electric field at the center of the sphere.

A square conducting slab with 10m sides carries a net charge of 10 micro Coulombs. Use Gauss' law to find E inside the slab and close to its surfaces, far from the edges of the slab. The slab is placed to the right of an infinite charged nonconducting plane with charge density of 2 X 10^-6 C/m^2 so that the faces of the slab are parallel to the plane. Find the electric field on each side of the slab far from its edges and the charge density on each face.

A square conducting slab with 10m sides carries a net charge of 10 micro Coulombs. Use Gauss' law to find E inside the slab and close to its surfaces, far from the edges of the slab. The slab is placed to the right of an infinite charged nonconducting plane with charge density of 2 X 10^-6 C/m^2 so that the faces of the slab are parallel to the plane. Find the electric field on each side of the slab far from its edges and the charge density on each face.

calculate electric field everywhere

Please help me solve this problem: A spherically symmetric charge density occupies the region r

surface charge density

The normal of a spherical surface is r^. Just inside the surface, the electric field is E,in = 15 N/C r^ and just outside the surface the electric field is Eout = -25 N/C r^. What is the surface charge density of surface?