Electrostatics - hollow charged sphere

[JustStudying]

So we have a cross sectoin of a sphere that is charged with Q (refer to attachment). electrostatics say the electric field within a charged conductor is 0, and the electric field is perpendicular to the surface.

But for a hollow charged sphere (like in the attachment), does the hollow area within the sphere have a electric field of 0 too?

 

[Simon Bridge]

Good question - how would you go about finding out?

No ... seriously... this is a standard exercise in electrostatics.
It is important to your understanding for you to do the calculation (or reason it out) for yourself.