MCQ ON ELECTRIC FIELD, ELECTRIC DIPOLE SET 2


Q1 Electric field at the center of charged circular loop is

  • ∞ 
  • Always  0  
  • None of these


Q2 Direction of electric field on the axis of a charged ring is along

  • ⊥ to the axis 
  • along the axis 
  • `45^{0}` with axis 
  •  the centre

  • along the axis 
  •  

    Q3 .The net force acting on a dipole in a uniform electric field is

    • In the direction of electric field
    • Opposite to the direction of electric field
    • Always zero
    • In a direction ⊥ to electric field

    • Always zero


    Q4 The potential energy of a dipole is  zero if angle made by the dipole moment with electric field is

    • `45^{0}` 
    • `90^{0}` 
    • `180^{0}` 
    • `0^{0}` 

    • `90^{0}` 


    Q5 The dipole is said to be in stable equilibrium when the dipole moment is

    • In the direction of the field
    • Opposite to the direction of the field
    • ⊥ to the direction of the field
    • At `45^{0}` with the direction of the field

    • In the direction of the field


    Q6 The dipole is said to be in unstable equilibrium when the dipole moment is

    • In the direction of the field
    • Opposite to the direction of the field
    • ⊥ to the direction of the field
    • At`45^{0}` with the direction of the field

    • Opposite to the direction of the field
     

    Q7 If a dipole is placed in a non uniform electric field then it will experience ?

  • Torque as well as force
  • Only torque but no force
  • Only force but no torque
  • Zero force and zero torque
    • Torque as well as force

    Q8 Torque has the units of

    • Nm
    • Cm
    •  `Nm^{2}`
    • `Cm^{-1}`

    • Nm


    Q9 A system of two equal and opposite charges separated by a certain distance is called

    • Electric field 
    • Electric dipole
    • Electric dipole moment
    • Electric flux

    • Electric dipole


    Q10 Dipole length is a ...

    • Scalar quantity 
    • Vector quantity

  • Vector quantity

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