Physics
Conductors and Insulators
Practice questions
When a conductor is connected to the Earth, its potential generally becomes equal to what?In which situation is a sustained flow of electric charge most likely?What is the main property of a conductor in the context of electric current and electrostatics?How can an insulator become charged even though very little electric current flows through it?In electrostatic equilibrium, if excess charge given to an object spreads over and remains on its outer surface, what type of material is the object most likely to be?Why can a glass rod remain charged when it is rubbed with silk while being held with a dry hand?How long does charge redistribution continue in a metal conductor?In electrostatic equilibrium, must the surface charge density on a charged conductor be the same everywhere?Why is the surface charge density higher at a pointed tip of a conductor in electrostatic equilibrium?Why is a lightning conductor made of metal?Why can a suitably closed metal-mesh enclosure with sufficiently small openings be used for electrostatic shielding?A student says that charge always remains inside a conductor. What is the correct correction for an isolated conductor in electrostatic equilibrium?If a charged object is brought near a metal conductor connected to the Earth, what may happen due to induction?In which type of material are most charge carriers tightly bound to atoms, so that deposited excess charge does not redistribute readily?In electrostatic equilibrium, the electric field throughout a metallic conductor is zero. What is the potential difference between any two points inside the conductor?Which option shows the correct use of an electrical insulator?When does a charged conductor reach electrostatic equilibrium?Which statement about a conductor is correct?Which statement about an insulator is correct?After a conductor is charged, when does the net redistribution of free charges in it stop?