Physics
Conductors and Insulators
Practice questions
Which statement correctly identifies the electrostatic equilibrium of a conductor?If a charged object is brought near an insulator, what phenomenon can mainly occur in the insulator?In electrostatic equilibrium, if there is no charge inside the cavity of a closed conductor, what is the electric field in the shielded interior region?Why is a metal sphere held using an insulating rod?Which material is more suitable for making electrical safety gloves?What is the purpose of rearrangement of charges in a conductor?In which material are charge carriers mostly bound to atoms or molecules?If a charged metal conductor has a sharp point on its surface, what is the electric field like just outside that point?Why can the net charge on a charged conductor decrease when it is touched by a grounded person?On which material can charge produced by rubbing remain localized for a longer time?Which combination of materials is correct for the conducting core and the outer insulating covering of an electric wire?In which phenomenon do free charges in a conductor separate without contact with a charged object?Why is polarisation a more suitable term than induction for an insulator?What is the benefit of placing a sensitive device inside a hollow conductor?If a piece of metal is placed on an insulating stand why can charge remain for a longer time?In electrostatic equilibrium, if an isolated conductor has no charge inside its cavities, which is a correct property of the conductor?Which option states a correct property of an insulator?When a conductor is charged, why does the excess charge spread over its outer surface?On which material can static electric charge be retained relatively easily?If a person's body is connected to Earth, on an object made of which material held in the hand would it be most difficult to retain static charge?