Quiz  /  MCQ On Electric Flux

  • 1. 
    What is the value of total flux through the faces of the cube with the sides of length a if a charge Q is placed at corner A of the cube is

  • q/ε
  • q/2ε
  • q/4ε
  • q/8ε

  • 2. 
    If a unit positive charge is kept in the air. Then the total flux coming out of unit charge is

  • 4πε
  • 4πε
  • ε
  • ε

  • 3. 
    A plane surface is rotated in a uniform electric field. When is the flux of the electric field through the surface maximum?

  • 1 Vm
  • 2 Vm
  • 3 Vm
  • 4 Vm

  • 4. 
    When is the flux through a surface taken as positive

  • 8 x 10
  • Nm
  • C
  • 8 x 10
  • Nm
  • /C
  • 16 x 10
  • Nm
  • /C
  • 4 x 10
  • Nm
  • /C

  • 5. 
    The net charge through a closed surface in a given medium depends on

  • When the surface is perpendicular to the field
  • When the surface is parallel to the field
  • When the surface is at an angle of 30
  • with the field
  • When the surface is at an angle of 45
  • with the field

  • 6. 
    The dimension of electric flux is

  • When the flux lines are directed inwards
  • When the flux lines are directed outwards
  • No flux lines through the surface
  • Flux lines are parallel to each other

  • 7. 
    A point charge q is placed at a distance a/2 directly above the centre of the square of side a. The electric flux through the square is

  • Size of the surface
  • Charge of the surface
  • The shape of the surface
  • Area of the surface
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