NCERT/Class 12/Physics/Electric Charges and Fields

Electric Charges and Fields

Class 12 · Physics

110 questions31 easy48 medium31 hard

Sample Questions

Q1.When electrons are transferred from wool to polythene during rubbing:

  • AThere is a transfer of mass from wool to polythene
  • BThere is no transfer of mass
  • CMass is transferred from polythene to wool
  • DMass is created

Q2.The unit of electric flux is:

  • AN/C
  • BN·m²/C
  • CC/m²
  • DN·C/m²

Q3.For a positive source charge, the electric field is directed:

  • ARadially inward
  • BRadially outward
  • CAlong the axis
  • DTangentially

Q4.Metals are good conductors of electricity because:

  • AThey have bound electrons
  • BThey have free electrons that can move inside the material
  • CThey have more protons than electrons
  • DThey are heavier than insulators

Q5.Conservation of charge means:

  • ACharge can be created but not destroyed
  • BCharge can be destroyed but not created
  • CThe total charge of an isolated system remains constant
  • DCharge always flows from positive to negative

Q6.This is a sample question to preview what you'll get in the full practice test...

  • A. Option one
  • B. Option two
  • C. Option three
  • D. Option four
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Concepts Covered

Additivity of ChargeApplications of Gauss's LawConductors and InsulatorsConservation of ChargeContinuous Charge DistributionCoulomb's LawDipole in Uniform Electric FieldElectric ChargeElectric DipoleElectric FieldElectric Field LinesElectric FluxGauss's LawQuantisation of ChargeSuperposition Principle

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