Physics
Conductors and Insulators
Practice questions
A closed conductor has an empty cavity. If a very strong external electric field is applied, what will the electric field inside the cavity be?If a positive charge is placed inside the cavity of a conductor, which statement about electric field lines in the cavity is correct?Why are electric field lines drawn more densely near the pointed part of a charged conductor?A field line is shown oblique to a conductor surface. What is the main defect in the diagram?A hollow conductor has an empty cavity with no charge inside. In electrostatic equilibrium, what is the electric field inside the cavity?The electric field is zero inside a conductor but not necessarily zero outside it. What best explains this?Where does excess charge reside on a charged conductor in electrostatic equilibrium?Just outside the surface of a charged conductor, what is the direction of the electric field?The result of zero electric field inside a conductor from Gauss's law applies in which condition?Just inside the surface of a charged conductor, what is the electric field?Just outside a conductor surface, electric field depends on what?What is the electric field inside a charged conductor in electrostatic equilibrium?Where does excess charge reside on a conductor in electrostatic equilibrium?What is the direction of electric field at the surface of a conductor?What is the electric field inside a uniformly charged conducting sphere?Electric field just outside a charged conductor depends on what?