Physics
Conductors and Insulators
Practice questions
Which gives the complete identity of the electrical behaviour of an insulator?What decides the most fundamental difference between a conductor and an insulator?If a material has very few free charge carriers, which electrostatic behaviour is more likely?If a conductor has many free charges, how can it respond to an external field?In which situation can the internal field remain zero even when total charge exists on the outer surface of a conductor?If electric field inside a conductor is zero what will be the electric force on a small positive test charge inside it?If local surface charge density on a conductor becomes double what is the qualitative conclusion about field near that point?Which broad principle of electrostatics is clarified by studying conductors and insulators?At an advanced level the difference between conductors and insulators helps explain which set of phenomena together?A target experiences a 63 N force southward and a 16 N force eastward. In which direction is the resultant force?A target experiences an 80 N force southward and an 18 N force eastward. In which direction is the resultant force?What is the main property of an insulator?Why does charge tend to spread over a metal conductor?Why can charge given to an insulator often stay at one place?How does a neutral conductor get charge in charging by conduction?A charged body is brought near a neutral conductor. What happens to charges inside the conductor?A negative rod is brought near a neutral conductor and the conductor is earthed. In which direction do electrons move?A positive rod is brought near a neutral conductor and the conductor is earthed. In which direction do electrons move?When a positively charged body is brought near a neutral conductor, what kind of change occurs inside the conductor?When a negatively charged body is brought near a neutral conductor, what happens to the electrons inside the conductor?