Practice question

**Electrostatic shielding** inside hollow conducting shell field zero when no charges inside, regardless of external field, because free charges redistribute on outer surface to cancel external field inside conductor, E=0 inside material in equilibrium, consequence of Gauss's law and conductor property. In electrostatic equilibrium, the electric field inside a conductor is zero. When a metal sphere is placed in a uniform electric field, charges redistribute on its surface such that the induced field inside cancels the external field. This results in a net electric field of zero inside the sphere, regardless of the external field strength, as conductors allow free movement of charges to achieve