Tuesday, 20 September 2022

ELECTRIC POTENTIAL : MCQ ON ELECTRIC POTENTIAL PART 2

Q1 It is possible to have a positively charged body at

  • Zero potential 
  • Negative potential 
  • Positive potential 
  • All of these

  • All of these

Q2 Electric potential of Earth is taken as zero because Earth is a good......

  • Insulator
  • Conductor 
  • Semiconductor 
  • Dielectric

  • Conductor 

Q3 In bringing an electron towards another electron, the electrostatic potential energy of the system – 

  • Increases 
  • Decreases 
  • Remains unchanged 
  • Becomes zero

  • Increases 


Q4 Two equal and opposite charges +q and –q are situated at x distance from each other, the value of potential at very far point will depend on 

  • Only on q 
  • Only on x 
  • On qx 
  • On q/x 

  • On qx 


Q5 1 eV = 1.6 x `10^{-19}`  (T/F)

  • True
  • False

  • True


Q6 The  potential within and on the surface of a conductor is

  •  Zero
  • Constant
  • Can be zero or constant
  • None of these

  • Constant

Electric field at any point is equal to the negative of potential gradient. But inside a conductor , Electric field is zero . Hence, electric potential is constant throughout the volume of conductor and has same value on its surface

Q7 The phenomenon of making a region free from any electric field is . 

  • Gauss theorem
  • Corona discharge
  • Electrostatic shielding
  • Faraday’s cage

Electrostatic shielding

The phenomenon of making a region free from any electric field is called electrostatic shielding . It is based on the fact that the electric field vanishes inside the cavity of a hollow conductor

Q8 Which of the following quantity is measured in kelvin? 

  • Time
  • Mass
  • distance
  • temperature

temperature 


Q9 Which of the following is not a fundamental quantity? 

  • Time
  • Mass
  • velocity
  • temperature

Velocity 


Q10 The SI unit of luminous intensity is 

  • Second
  • Candela
  • mole
  • m/s

Candela 


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