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Class 12 · Physics · Easy
→Why can a charged metal sphere retain its charge for a longer time when it is held with an insulating rod?
Class 12 · Physics · Easy
→How does a closed, continuous metal enclosure help protect against lightning?
Class 12 · Physics · Easy
→The basic principle of electrostatic shielding is based on which fact?
Class 12 · Physics · Easy
→On which material does charge mostly remain near the place where it is given?
Class 12 · Physics · Easy
→Why is the net electric field zero within the material of a charged conductor in electrostatic equilibrium?
Class 12 · Physics · Easy
→Which of the following pairs represents, respectively, a conductor and an insulator?
Class 12 · Physics · Easy
→In a static condition, the electric field inside a metal becomes zero. Which state does this indicate?
Class 12 · Physics · Easy
→What is the main difference between electrostatic induction in a conductor and polarisation in an insulator?
Class 12 · Physics · Easy
→When an insulator is placed in an external electric field, its bound positive and negative charges undergo a slight relative displacement within molecules, but charges do not flow through the material. What is this phenomenon called?
Class 12 · Physics · Easy
→What are the main charge carriers of electric current in a metallic conductor?
Class 12 · Physics · Easy
→Which property of an insulator makes it useful for electrical safety?
Class 12 · Physics · Easy
→Why is a charged conductor equipotential in electrostatic equilibrium?
Class 12 · Physics · Easy
→If a charged metal sphere is connected to the Earth, what can its excess charge do?
Class 12 · Physics · Easy
→Why can there be no tangential electric field at the surface of a conductor in electrostatic equilibrium?
Class 12 · Physics · Easy
→In which situation is electrostatic induction observed?
Class 12 · Physics · Easy
→Which material is generally used for the conducting core of an electric wire?
Class 12 · Physics · Easy
→What is the main reason for very little electric charge flow in an insulator?
Class 12 · Physics · Easy
→Why is the electric field perpendicular to the surface of a conductor in electrostatic equilibrium?
Class 12 · Physics · Easy
→A glass rod can retain charge after rubbing because glass is what type of material?
Class 12 · Physics · Easy
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