Physics
Conductors and Insulators
Practice questions
When an initially neutral conductor is placed near a positively charged object, which induced charge appears on the nearer end of the conductor?If a negatively charged rod is brought near a neutral metal sphere, towards which side will the free electrons in the sphere move?If a positively charged rod is brought near an isolated neutral metal sphere, in which direction will the free electrons in the sphere move?What is the main reason for covering electric wires with rubber?Which option correctly corrects a misconception about conductors?Which statement correctly corrects a common misconception about insulators?What is a direct result of the electric field being zero inside a conductor in electrostatic equilibrium?What is mainly understood by studying conductors and insulators?Which statement correctly describes the use of conductors and insulators in electric wires?Why do free charges rearrange in a conductor before electrostatic equilibrium is established?What does a zero electric field inside a conductor in electrostatic equilibrium indicate?Why does excess charge reside on the outer surface of an isolated charged conductor in electrostatic equilibrium?Why does charge given to an insulator often remain localized?When the same electric field is applied to pieces of metal and rubber, a steady electric current flows readily through the metal but not through the rubber. What is the main microscopic reason for this?Why does charge separation occur in an isolated neutral conductor when a charged rod is brought near it?Why can polarisation occur in an insulator when an external charge is brought near it?What is the correct difference between electrostatic induction in a conductor and polarisation in an insulator?Electrostatic shielding is based on which property of a conductor?Why is an object placed inside a closed metal box protected from an external electrostatic field?Why must the electric field at a conductor’s surface be perpendicular to the surface?