An insulated balloon is charged by rubbing it with fur. Will it stick more readily to a conducting or insulating wall ?

A person standing on an insulated tool, touches a charged insulated conductor. Is the conductor discharged completely ?

A hollow insulated brass sphere is positively charged. The electric potential inside the sphere is

A cylinder with a movable piston contains 3 moles of hydrogen at standard temperature and pressure. The walls of the cylinder are made of a heat insulator, and the piston is insulated by having a pile of sand on it. By what factor does the pressure of the gas increase if the gas is compressed to half its original volume?

Why is an insulator sometimes called a dielectric? What is the main difference between free and bound charge? Generally one of the two plates of a Capacitor System is earthed, why? Derive the expression for the energy stored in a charged capacitor.