PHYSICS MCQs 2nd Year Chapter No.1 ELECTROSTATICS Test No.2

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PHYSICS 
Chapter Name : ELECTROSTATICS
Chapter No. 01  [Test No.2]
2st Year
Multiple Choice Questions

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Book Name :  PHYSICS
Chapter No. 01 (Test No.2)
Chapter Name : ELECTROSTATICS 
Total MCQ from Text Book :  96
Book Version  :
2022

Published By : Punjab Text Book Board Lahore
Approved By : Govt of the Punjab and Federal Ministry for Education
Test Type : MCQ’s
Exam conduct By : Inter Boards of Sindh, KPK, Balochistan, AJK, Gilgit Baltistan, Punjab & Federal
Class / Grade  : 12 ( F.Sc. Intermediate)
Total Marks : 96
Total Time :   96 minutes
61

GRADE 12 - PHYSICS CHAPTER NO.1 ELECTROSTATICS Test No.2

GRADE 12 - PHYSICS CHAPTER NO.1 ELECTROSTATICS Test No.2

1 / 96

The value of Coulomb's constant (K) in SI units is

2 / 96

An ECG records the_______between points on human skin generated by electric process in the heart:

3 / 96

The unit of Electric intensity other than NC-1 is:

4 / 96

Selenium is:

5 / 96

Which one of the following can be taken as measure of electric field intensity:

6 / 96

Two point charges are +2C and +6C repel each other with a force of 12N. If a charge of -4C is given to each of these charges, the force now is

7 / 96

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. Which of the following quantity remain unchanged?

8 / 96

The number of electrons in one coulomb charge is equal to

9 / 96

If f1 and 2 are forces acting on ?-particle and electron respectively, when

10 / 96

Time constant is defined as the time during which a capacitor charges to_____ of its equilibrium value.

11 / 96

Dielectric constant ?r can be defined as

12 / 96

The number of electrons in one coulomb charge is equal to:

13 / 96

Due to polarization, electric field E

14 / 96

A charged conductor has charge on its:

15 / 96

One Joule is equal to

16 / 96

The value of ?o permittivity for free space is:

17 / 96

Which of the following is the dielectric constant of metals?

18 / 96

The electric field created by positive charge is:

19 / 96

In a charged capacitor, the energy resides in:

20 / 96

Electric intensity inside the hollow sphere is:

21 / 96

If the separation between the plates of a capacitor is doubled then its capacitance become

22 / 96

Capacitance of a Capacitor in Vacuum is given by

23 / 96

If potential difference across two plates of a parallel plates capacitor is doubled then the energy stored in it will be

24 / 96

One electron volt is equal to

25 / 96

The energy stored in the capacitor is:

26 / 96

The concept of electric field theory was introduced by

27 / 96

For computation of electric flux, the surface area should be

28 / 96

A charge Q is enclosed in a dielectric of strength K the maximum number of electric lines of force are

29 / 96

Relative permittivity for air is:

30 / 96

The constant of proportionality "K" depend upon:

31 / 96

If a charged capacitor is connected to earth its charge.

32 / 96

Charge on electron is:

33 / 96

4 x 1020 eV energy is required to move a charge of 0.25 C from A to B the potential difference between A and B is

34 / 96

A metallic ball having charge 10-8C moves from a point A at potential 600V to a point B at zero potential. Which of the following is the change in its K.E.

35 / 96

Photocopier and inkjet printer are the application of:

36 / 96

The energy stored in a charged capacitor is given by:

37 / 96

Special organ called Ampullae of lorenzini that are very sensitive to electric field are found in

38 / 96

A charge Q is divided into two parts q1 and q2. The maximum coulomb repulsion between the two parts is obtained when ratio q1/q2 is.

39 / 96

An alpha particle is accelerated through potential difference of 106V.Which of the following is its K.E?

40 / 96

The relation "-?V/?r" represents

41 / 96

Two equal and opposite equal charges separated by small distance are said to make a :

42 / 96

The product of resistance and capacitance is

43 / 96

When electron is brought near a - vely charged plate then its electrical P.E.

44 / 96

When dielectric is placed between the plates of capacitor, The value of E between the plates

45 / 96

The electron volt is the unit of

46 / 96

Three capacitor of 4?F each are to be connected in such a way that the net capacitance is 6?F. Then

47 / 96

The capacitance of a capacitor can be increased by

48 / 96

Due to polarization of the dielectric, the capacitance of the capacitor:

49 / 96

When 1014 electron are removed from a neutral metal sphere then which of the following is the charge on sphere?

50 / 96

Photocopier and inkjet printer are the application of:

51 / 96

If time constant in RC circuit is small, the capacitor is charged or discharged

52 / 96

Doubling the distance between the plates of a capacitor, the capacitance:

53 / 96

Selenium is a:

54 / 96

SI unit of electric flux is:

55 / 96

The work done in bringing a unit positive charge from infinity to that point in an electric field is called:

56 / 96

The force between two point charges separated by air is 4 N. When separated by a medium of relative permittivity 2, the force between them becomes;

57 / 96

The electric field lines are closer where the field is:

58 / 96

If 2?F and 4?F capacitors are connected in parallel, the resultant capacitance is

59 / 96

If the potential difference across the two plates of a parallel plate capacitor is double then its energy stored in it will be:

60 / 96

If a metal plate is placed between two point charges then electrostatic force between them.

61 / 96

1 ohm x 1 farad is equal to

62 / 96

Electric field and electric potential inside hollow charged conducting sphere are respectively.

63 / 96

Two opposite point charge of same magnitude separated by distance 2d, electric potential mid-way between them is:

64 / 96

Which of the following is not the energy stored between the plates of a condenser?

65 / 96

Electron volt is the unit of

66 / 96

SI unit of permittivity of free space are:

67 / 96

If an insulating material called dielectric is introduced between the plates, the capacitance of capacitor is:

68 / 96

If 2?F and 4?F capacitors are connected in series, the resultant capacitance is

69 / 96

Capacitance of parallel plate capacitor is:

70 / 96

Selenium is a:

71 / 96

The Electrostatic force between two charges is 42 N. If we place a dielectric of er.=2.1 between the charges, then the force become equal to:

72 / 96

The electric flux through closed surface depends upon.

73 / 96

Charge on an electron is:

74 / 96

The electrostatic force of repulsion between two electrons at a distance 1m is:

75 / 96

Due to polarization of the dielectric, the electric intensity between the plates of a capacitor:

76 / 96

The force between two similar unit charges placed one meter apart in air is:

77 / 96

When air is replaced by a dielectric medium of relative permittivity ?r, the maximum capacity of the condenser_____

78 / 96

Two charges q1 and q2 are placed in vacuum at distance d and force between them is F. If a mentioned of relative permittivity 4 is introduced between them then new force will be:

79 / 96

For computation of electric flux, the surface area should be

80 / 96

A parallel plate capacitor with oil between the plate(?r = 2) has a capacitance "C". If oil is removed then capacitance of capacitor becomes.

81 / 96

The product of resistance and capacitance is equal to

82 / 96

A 1?F capacitor is subjected to 4000V potential difference the energy stored in capacitor is:

83 / 96

Two charges 1 ?c and 5?c separated by 20cm, the ratio of electrical forces acting on them will be:

84 / 96

The product of resistance and capacitance is

85 / 96

The toner of the printer is given

86 / 96

If the medium between plates of a capacitor be air or vacuum, then the capacitance of capacitor is:

87 / 96

Two copper spheres of same radii one hollow and other solid are charged to the same potential then.

88 / 96

If a charged body is moved against the electric field, it will gain:

89 / 96

A Particle carrying a charge of 2e falls through a potential difference of 3V. The energy acquired by it will be:

90 / 96

Which one of the following relations for the energy stored in capacitor is not correct?

91 / 96

Which material sheet should be placed between the plates of a parallel plate capacitor in order to increase its capacitance?

92 / 96

If a dielectric is placed between the plates of a capacitor, its capacitance

93 / 96

Capacitance of a capacitor does not depend upon:

94 / 96

The product of resistance and capacitance is called

95 / 96

A capacitor is charged to store energy U. the charging battery is disconnected. An identical capacitor is now connected in parallel to the first capacitor. The energy in each capacitor is

96 / 96

The magnitude of an electric field E, such that an electron placed in it would be experience an electric force equal to its weight, is given by

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