  # Electrostatics Quiz | Electrostatics Objective Type Questions & Answers

Questions
21 Charge on capacitor plates is directly proportional to
A current
B electric field intensity
C potential difference
D resistance

22 If the distance between the two point charges become half then force between them becomes
A double
B half
C four times
D remains same

23 The force per unit charge is know as
A electric flux
B electric intensity
C electric potential
D all of above are same

24 Electric field due to positive charged plate is E = ?/2??. If oppositely charged plate of same amount is placed parallel to it, then resultant field contains amount of energy
A Q/?oA
B Q/e
C QV2
D Q2/C

25 If two charges are increased by two times then force
A Decreases 9 times
B Increases 9 times
C Increases 4 times
D Decreases 4 times

26 In equation Q=CV, C is constant of proportionality called capacitor's
A power
B capacitance
C heat
D electric intensity

27 In equation Q=CV, C is constant of proportionality called capacitor's
A power
B capacitance
C heat
D electric intensity

28 Capacitance of a capacitor is 100μF and potential difference between plates is 50 volts then charge stored on each plate is
A 10 mC
B 5 mC
C 4 mC
D 15 mC

29 An electric field can deflect
A neutrons
B ?-rays
C both glass rod and silk acquire negative charge
D none

30 For what value of ? the electric flux has average value of those of extreme values ?
A 60?
B 45?
C 90?
D 0?

31 Electric force between two point charges in air or vacuum is F. If we replace air or vacuum by an insulator (dielectric) of relative permitivity Cr the force between the charges will
A decrease
B increase
C remain constant
D depends upon composition of dielectric

32 An electric charge at rest produces
A only a magnetic field
B only an electric field
C neither electric field nor magnetic field
D both electric and magnetic fields

33 3 capacitors with capacitances 5µF, 6µF and 7µF are arranged in parallel combination with a battery of 5V, as 1µF = 10-6F, voltage across each capacitor is
A 15V
B 5V
C 18V
D 20V

34 SI unit of electric potential is
A volts
B ohm
C coulomb
D newton

35 Tick the only wrong statement.
A similar charges repel each other
B dissimilar charges attract each other
C repulsion is the sure test of electrification
D an electrically neutral body is repelled both positively and negatively charged bodies

Answer: an electrically neutral body is repelled both positively and negatively charged bodies
36 Photocopier and inject printer are dealt in
A Electrostatics
B Charges in motion
C Capacitors
D Electric fields

37 If metallic conductor is charged negatively then its weight
A Remains same
B First increases then decreases
C Decreases then increases
D Increases for a while

38 Coulomb is equal to charge of
A 8.25×1018
B 6.25×1018
C 7.25×1018
D 5.25×1018

39 Coulomb's law is only true for point charges whose sizes are
A medium
B very large
C very small
D none of the above