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Class 12 Mcq

Class 12 Physics के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

PhysicsWhy can an external charge not produce a field inside an empty cavity of a closed conducting shell?Class 12Electric Charges and FieldsConductors and InsulatorsHard PhysicsIf a positive charge placed in a cavity touches the inner surface of the conductor where will the excess charge be found after a long time?Class 12Electrostatic Potential and CapacitanceElectrostatics of ConductorsHard PhysicsIf a negative charge inside the cavity of a neutral conductor is not touching the conductor what will be the total charge on the outer surface?Class 12Electric Charges and FieldsConductors and InsulatorsMedium PhysicsHow is a positive charge placed in the cavity of a neutral conductor balanced so that the electric field inside the conducting material remains zero?Class 12Electric Charges and FieldsConductors and InsulatorsMedium PhysicsWhat broad conclusion follows from an advanced study of conductors and insulators?Class 12Electric Charges and FieldsConductors and InsulatorsMedium PhysicsIf a material has very few free charge carriers, which electrostatic behaviour is more likely?Class 12Electric Charges and FieldsConductors and InsulatorsMedium PhysicsWhat is the most fundamental physical basis of the difference between a conductor and an insulator?Class 12Electric Charges and FieldsConductors and InsulatorsEasy PhysicsWhich statement gives the deeper identity of the electrical behaviour of an insulator?Class 12Electric Charges and FieldsConductors and InsulatorsMedium PhysicsWhich is the complete identity of electrostatic equilibrium for a conductor?Class 12Electric Charges and FieldsConductors and InsulatorsMedium PhysicsWhich arrangement is best for protecting a sensitive device from external electrostatic effect?Class 12Electric Charges and FieldsConductors and InsulatorsMedium PhysicsA conductor has zero field inside but field exists outside. What is the most correct meaning?Class 12Electric Charges and FieldsConductors and InsulatorsMedium PhysicsIn which situation can local positive and negative regions form on a conductor with zero net charge?Class 12Electric Charges and FieldsConductors and InsulatorsMedium PhysicsA charged comb attracts small pieces of paper. What is the correct advanced reason?Class 12Electric Charges and FieldsConductors and InsulatorsMedium PhysicsWhat microscopic change can occur inside an insulator in an external electric field?Class 12Electric Charges and FieldsConductors and InsulatorsMedium PhysicsIf an insulator has localized charge why may touching one point to earth not discharge the whole object immediately?Class 12Electric Charges and FieldsConductors and InsulatorsMedium PhysicsWhat is the physical reason for keeping the tip of a lightning rod sharp?Class 12Electric Charges and FieldsConductors and InsulatorsMedium PhysicsWhy is a lightning protection rod made of metal and connected to earth?Class 12Electric Charges and FieldsConductors and InsulatorsMedium PhysicsWhy does a person inside a car get relative protection during lightning?Class 12Electric Charges and FieldsConductors and InsulatorsMedium PhysicsHow does a closed metal cage protect the inside from an external electrostatic field?Class 12Electric Charges and FieldsConductors and InsulatorsMedium PhysicsIf the electric field inside a closed conductor is zero, what can be said about energy associated with the electric field inside?Class 12Electric Charges and FieldsConductors and InsulatorsHard