10th
Feb
Electrostatics MCQ

Electrostatics MCQ

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  • 10th Feb, 2023
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Electrostatics MCQ Questions

Take Electrostatics Quiz To test your Knowledge

Below are few Electrostatics MCQ test that checks your basic knowledge of Electrostatics. This Electrostatics Test contains around 20 questions of multiple choice with 4 options. You have to select the right answer to a question. You can see the correct answer by clicking the view answer link.

Electrostatics MCQ Quiz

1) An electric dipole is placed at an angle of 30° with an electric field intensity 2 × 105 N/C. It experiences a torque equal to 4 N m. The charge on the dipole, if the dipole length is 2 cm, is

  • A. 5 mC
  • B.8 mC
  • C.7 μC
  • D.2 mC

2) Three concentric metallic spherical shells of radii R, 2R, 3R, are given charges Q1, Q2, Q3, respectively. It is found that the surface charge densities on the outer surfaces of the shells are equal. Then, the ratio of the charges given to the shells, Q1 : Q2 : Q3, is

  • A. 1 : 4 : 9
  • B.1 : 2 : 3
  • C.1 : 3 : 5
  • D.1 : 8 : 18

3) Two identical charged spheres are suspended by strings of equal lengths. The strings make an angle of 30° with each other. When suspended in a liquid of density 0.8 g cm–3, the angle remains the same. If density of the material of the sphere is 1.6 g cm–3, the dielectric constant of the liquid is

  • A. 1
  • B.2
  • C.3
  • D.4

4) we use ..................to relieve discomfort of allergy sufferers in homes.

  • A. vacuum cleaner
  • B.wind cleaner
  • C.electrostatic air cleaner
  • D.none of the above

5) Value of k in coulomb's law depends upon -

  • A. medium between two charges
  • B.magnitude of charges
  • C.distance between charges
  • D.both A and B
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6) Value of k in coulomb's law depends upon -

  • A. medium between two charges
  • B.magnitude of charges
  • C.distance between charges
  • D.both A and B

7) Value of k in coulomb's law depends upon -

  • A. medium between two charges
  • B.magnitude of charges
  • C.distance between charges
  • D.both A and B

8) Coulomb is equal to charge of -

  • A. 5.25×1018
  • B.6.25×1018
  • C.8.25×1018
  • D.7.25×1018

9) Selenium becomes a conductor in light so it behaves like -

  • A. Semiconductor
  • B.Light emitting diode
  • C.Photodiode
  • D.Capacitor

10) Property of material due to which it attracts or repels other objects is

  • A. charge
  • B.friction
  • C.velocity
  • D.current

11) Charge on capacitor plates is directly proportional to -

  • A. electric field intensity
  • B.current
  • C.potential difference
  • D.resistance

12) What happens when we rub a glass rod with a silk cloth ?

  • A. glass rod acquires positive charge while silk acquires negative charges
  • B.glass rod acquires negative charge while silk acquires positive charge
  • C.both glass rod and silk acquire negative charge
  • D.both glass rod and silk acquire positive charge

13) Thunderclouds are charged by friction between -

  • A. layers of clouds
  • B.clouds and air
  • C.water molecules and air
  • D.layers of air

14) If the distance between the two point charges become half then force between them becomes

  • A. double
  • B.four times
  • C.remains same
  • D.half

15) Charge on capacitor plates is directly proportional to

  • A. current
  • B.potential difference
  • C.electric field intensity
  • D.resistance

16) In equation Q=CV, C is constant of proportionality called capacitor's

  • A. power
  • B.heat
  • C.capacitance
  • D.electric intensity

17) In equation Q=CV, C is constant of proportionality called capacitor's

  • A. power
  • B.heat
  • C.capacitance
  • D.electric intensity

18) An Electric field can deflect _______________________ ?

  • A. Neutrons
  • B.X-rays
  • C.α - rays
  • D.None of These

19) The Electric line of force are ________________ ?

  • A. Physically existing everywhere
  • B.imaginary
  • C.physically existing near the charges
  • D.depends upon case

20) The Value of the capacitance depends upon the__________________ ?

  • A. Thickness of the capacitor plates
  • B.geometry of the capacitor
  • C.density of the capacitor plates
  • D.voltage applied

21) Particles With Opposite Charges

  • A. attract
  • B.rebel
  • C.repel
  • D.attack

22) Electroscope Can Be Charged By

  • A. convection
  • B.radiation
  • C.conduction
  • D.all of above

23) The SI Unit Of Electric Potential Is

  • A. volts
  • B.ohm
  • C.coulomb
  • D.newton

24) Dielectric Strength Of Medium

  • A. increases with rise in temperature
  • B.increases with moisture content
  • C.is same for all insulating materials
  • D.none of the above

25) The Dissipation Factor Of A Good Dielectric Is Of The Order Of

  • A. 0.0002
  • B.0.002
  • C.0.02
  • D.0.2

26) The Electric Field At A Point Situated At A Distance D From Straight Charged Conductor Is

  • A. proportional to d
  • B.inversely proportional to d
  • C.inversely proportional to d
  • D.none of the above

27) Paper Capacitor And Mica Capacitor Are The Examples Of

  • A. ceramic capacitors
  • B.fixed capacitors
  • C.parallel plate capacitors
  • D.electrolytic capacitors

28) Which Of The Following Is Not A Good Insulator?

  • A. Copper
  • B.Glass
  • C.rubber
  • D.wool

29) The Reason A Charged Balloon Will Stick To A Wall Is That

  • A. the charge is slightly sticky and acts like glue
  • B.electrons transfer back and forth between the wall and the balloon
  • C.induced opposite charges in the wall are closer than other wall charges
  • D.balloon material simply sticks to walls

30) The Common Hydrogen Atom Consists Of

  • A. one proton
  • B.one proton and one electron
  • C.two protons, one neutron, and two electrons
  • D.one neutron and one electron

31) The Accumulation Of Excess Electric Charge On An Object Is Called

  • A. Static electricity 
  • B.Electric discharge
  • C.Resistance
  • D.Circuit 

32) Which Of The Following Is NOT A Subatomic Particle?

  • A. Proton
  • B.Neutron
  • C.Electron
  • D.Positron

33) An Electrolytic Capacitor Is Generally Made To Provide

  • A. low capacitance
  • B.fixed capacitance
  • C.variable capacitance
  • D.large value of capacitance

34) What Charge Does A Proton Have?

  • A. negative (-)
  • B.positive (+)
  • C.neutral or no charge (0)

35) What Is The Symbol For Force?

  • A. F
  • B.f
  • C.N
  • D.n

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