Class 10 Physics Chapter 4

Updated: 18 Dec 2023

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Class 10 Physics Chapter 4 introduces the concept of “Electrostatics”. This is mainly chapter No. 13, “Electrostatics”, of the book of Class 10.
This article consists of Notes, SLO Based Notes and MCQs of Physics, which cover your course, board papers and clear your Physics concept for different types of tests.

Class 10 Physics Chapter 4 Notes

Electrostatics

Class 10 Physics Chapter No. 13 Notes

SLO Base Notes

Class 10 Physics Chapter 13 SLO Base Notes

Class 10 Physics Chapter 4 MCQs

1. The study of charge at rest is called:
(a) Electrostatics
(b) Electrodynamics
(c) Magnetism
(d) All of these

Electrostatics

2. When we touch a metal doorknob and feel a shock after sliding across a car seat, what force is responsible for this sensation?
(a) Magnetic force
(b) Gravitational force
(c) Electrostatic force
(d) Frictional force

Electrostatic force

3. According to atomic theory, what role do electric forces play in the formation of liquids and solids?
(a) Electric forces repel atoms
(b) Electric forces have no influence
(c) Electric forces attract atoms
(d) None of these

Electric forces attract atoms

4. What property of an object, similar to mass, is an inherent characteristic?
(a) Temperature
(b) Electric charge
(c) Color
(d) Shape

Electric charge

5. What is the unit of measurement for electric charge?
(a) Volt
(b) Ampere
(c) Coulomb
(d) Ohm

Coulomb

6. What is the denotation of electric charge?
(a) C
(b) E
(c) V
(d) Q

Q

7. How many types of electric charge are commonly recognized in the study of electrostatic?
(a) One
(b) Two
(c) Three
(d) Four

Two

8. When two glass rods rubbed with silk cloth are brought near each other, what is their behavior?
(a) They attract each other
(b) They remain neutral
(c) They repel each other
(d) None of these

They repel each other

9. In an atom, which subatomic particle carries a positive charge?
(a) Proton
(b) Electron
(c) Neutron
(d) Hydrogen atom

Proton

10. In an atom, which subatomic particle carries a negative charge?
(a) Proton
(b) Electron
(c) Neutron
(d) Hydrogen atom

Electron

11. In an atom, which subatomic particle carries no charge?
(a) Proton
(b) Electron
(c) Neutron
(d) Hydrogen atom

Neutron

12. What is the charge of a proton?
(a) -1.6 \times 10^{-19} \ C
(b) 9.109 \times 10^{-31} \ kg
(c) +1.6 \times 10^{-19} \ C
(d) 0 \ C

+1.6 \times 10^{-19} \ C

13. What is the charge of an electron?
(a) -1.6 \times 10^{-19} \ C
(b) 9.109 \times 10^{-31} \ kg
(c) +1.6 \times 10^{-19} \ C
(d) 0 \ C

-1.6 \times 10^{-19} \ C

14. What is the charge of a neutron?
(a) -1.6 \times 10^{-19} \ C
(b) 9.109 \times 10^{-31} \ kg
(c) +1.6 \times 10^{-19} \ C
(d) 0 \ C

0 \ C

15. What is the mass of a proton?
(a) 1.6 \times 10^{-19} \ kg
(b) 9.109 \times 10^{-31} \ kg
(c) 1.673 \times 10^{-27} \ kg
(d) 0 \ kg

1.673 \times 10^{-27} \ kg

16. What is the mass of an electron?
(a) 1.6 \times 10^{-19} \ kg
(b) 9.109 \times 10^{-31} \ kg
(c) 1.673 \times 10^{-27} \ kg
(d) 0 \ kg

9.109 \times 10^{-31} \ kg

17. What is the mass of a neutron?
(a) 1.6 \times 10^{-19} \ kg
(b) 9.109 \times 10^{-31} \ kg
(c) 1.675 \times 10^{-27} \ kg
(d) 0 \ kg

1.675 \times 10^{-27} \ kg

18. What is the process of charging an object by adding or removing electrons called?
(a) Magnetization
(b) Electrification
(c) Electrostatic
(d) None of these

Electrification

19. Which type of charge indicates that an object has more electrons than normal?
(a) Positive charge
(b) Neutral charge
(c) Negative charge
(d) Ionic charge

Negative charge

20. Which type of charge indicates that an object has fewer electrons than normal?
(a) Positive charge
(b) Neutral charge
(c) Negative charge
(d) Ionic charge

Positive charge

21. A change in electrical charge distribution caused by nearby charges:
(a) Magnetic induction
(b) Electrostatic induction
(c) Ohm’s law
(d) None of these

Electrostatic induction

22. The device used to detect and show the presence of electric charges is:
(a) Electroscope
(b) Ammeter
(c) Voltmeter
(d) Thermometer

Electroscope

23. Which component of an electroscope responds to the presence of electric charges?
(a) The metal rod
(b) The metal leaves
(c) The pivot
(d) The glass enclosure

The metal leaves

24. When a negatively charged object is brought close to an electroscope, what happens to the metal leaves of the electroscope?
(a) They collapse
(b) They change color
(d) They vibrate

25. The force of attraction or repulsion between two point charges is directly proportional to the product of the magnitude of charge and inversely proportional to the square of the distance between the charges. What is this law called?
(a) Newton’s Law of Motion
(b) Coulomb’s Law
(c) Hooke’s Law
(d) Ohm’s Law

Coulomb’s Law

26. Coulomb’s Law describes the relationship between:
(a) Mass and velocity
(b) Magnetism and electric current
(c) Pressure and temperature
(d) Electric charge and electric force

Electric charge and electric force

27. According to Coulomb’s Law, what happens to the electric force between two point charges if the distance between them is doubled while keeping the charges constant?
(a) The force is halved
(b) The force is one-fourth
(c) The force remains same
(d) The force is inverted

The force is one-fourth

28. If you double the magnitude of one of the point charges while keeping the other charge and the distance constant, what happens to the electric force between them according to Coulomb’s Law?
(a) The force is halved
(b) The force is doubled
(d) The force remains same

The force is doubled

29. An electric charge considered to exist at a single point, and thus having neither area nor volume is:
(a) Point charge
(b) Nano charge
(c) Atomic charge
(d) Single charge

Point charge

30. The value of Coulomb constant (k) in terms of permittivity of free space is:
(a) k = \varepsilon_o
(b) k = \frac{1}{ \varepsilon_o}
(c) k = 4 \pi \varepsilon_o
(d) k = \frac{1}{4 \pi \varepsilon_o}

k = \frac{1}{4 \pi \varepsilon_o}

31. What is the approximate value of the Coulomb constant (k)?
(a) 9.8 \ m/s^2
(b) 6.67 \times 10^{-11} \ N.m^2/kg^2
(c) 9 \times 10^9 N.m^2/C^2
(d) 3 \times 10^8 m/s

9 \times 10^9 N.m^2/C^2

32. The SI unit of the Coulomb constant is:
(a) N.m^2/C^2
(b) J.m/C
(c) C/m^2
(d) kg.m/s^2

N.m^2/C^2

33. What is the unit of the permittivity of free space (\varepsilon_o) in the International System of Units (SI)?
(a) C^2/N.m^2
(b) \Omega /m
(c) N.m^2/C^2
(d) kg/m^3

C^2/N.m^2

34. The notation of the permittivity of free space is:
(a) \varepsilon_o
(b) \eta_o
(c) \mu_o
(d) \sigma_o

\varepsilon_o

35. The value of the Coulomb constant (k) depends on:
(a) The charge of the particles
(b) The distance between the charges
(c) The medium between the charges
(d) The speed of light

The medium between the charges

36. In a material medium with high permittivity, what happens to the Coulomb force between charges compared to vacuum?
(a) It remains the same
(b) It increases
(c) It becomes zero
(d) It decreases

It decreases

37. The value of the permittivity of free space is:
(a) 8.85 \times 10^{-12} C^2/N.m^2
(b) 9 \times 10^7 Nm/C^2
(c) 3 \times 10^8 m/s
(d) 6.67 \times 10^{-11} N.m^2/kg^2

8.85 \times 10^{-12} C^2/N.m^2

38. Coulomb Force is:
(a) Only attractive
(b) Only repulsive
(c) Both attractive and repulsive
(d) None of these

Both attractive and repulsive

39. Gravitational Force is:
(a) Only attractive
(b) Only repulsive
(c) Both attractive and repulsive
(d) None of these

Only attractive

40. What is the region around a charge where an electric test charge would experience an electric force called?
(a) Electromagnetic field
(b) Gravitational field
(c) Magnetic field
(d) Electric field

Electric field

41. A small, positive charge used to measure or detect the electric field at a specific location is:
(a) Point charge
(b) Test charge
(c) Electron
(d) Source charge

Test charge

42. A charge that generates an electric field is called:
(a) Source charge
(b) Test charge
(c) Magnetic charge
(d) Neutral charge

Source charge

43. The strength of an electric field is called:
(a) Electric potential
(b) Electric flux
(c) Electric field intensity
(d) Electric charge density

Electric field intensity

44. The mathematical expression for electric field intensity:
(a) E = \frac{F}{q_o}
(b) F = ma
(c) V = IR
(d) P = \frac{F}{A}

E = \frac{F}{q_o}

45. In how many dimensions does an electric field exist around a charged object?
(a) One dimension
(b) Two dimensions
(c) Three dimensions
(d) Four dimensions

Three dimensions

46. What is the SI unit of electric field?
(a) Newton per coulomb (N/C)
(b) Coulomb per second (C/s)
(c) Joule per coulomb (J/C)
(d) Watt per meter (W/m)

Newton per coulomb (N/C)

47. What is the direction of electric field lines for a positive point charge?
(c) Horizontal
(d) Vertical

48. For a negative point charge, the electric field lines converge in which direction?
(c) Horizontal
(d) Vertical

49. The imaginary lines showing the direction of the electric field is called:
(a) Electric paths
(b) Flux lines
(c) Voltage lines
(d) Electric field lines

Electric field lines

50. Electric field intensity is __________ quantity.
(a) Scalar
(b) Vector
(c) Scalar and vector
(d) None of these

Vector

51. What do electric field intensity vectors help to visualize?
(a) The charge of an object
(b) The speed of sound
(c) The electric field strength
(d) The heat transfer

The electric field strength

52. If a charge experiences a force of 15 Newton and has a charge of 5 Coulombs, what is the electric field strength at that location?
(a) E = 15 \ N
(b) E = \frac{3 N}{C}
(c) E = 20 \frac{N}{C}
(d) E = 75 \frac{N}{C}

E = \frac{3 N}{C}

53. A test charge with a value of 2 \ C experiences an electric field with strength of 8 \ N/C . What is the force acting on the test charge at that location?
(a) F = 16 \mu N
(b) F = 10 \ N
(c) F = 2 \mu N
(d) F = 16 \ N

F = 16 \ N

54. The term that describes the electric potential energy per unit charge in an electric field:
(a) Electric force
(b) Electric charge density
(c) Electric potential
(d) Electric flux

Electric potential

55. What is the unit of electric potential?
(a) Newton per coulomb (N/C)
(b) Joules per coulomb (J/C)
(c) Watts per meter (W/m)
(d) None of these

Joules per coulomb (J/C)

56. The equivalent of one Joule per Coulomb (1 \ J/C) is:
(a) One Volt (1 \ V)
(b) One Newton (1 \ N)
(c) One Watt (1 \ W)
(d) One Pascal (1 \ Pa)

One Volt (1 \ V)

57. What symbol is commonly used to denote electric potential?
(a) E
(b) Q
(c) V
(d) F

V

58. What is the mathematical expression for electric potential?
(a) V = U + q
(b) V = \frac{U}{q}
(c) V = U \times q
(d) V = U - q

V = \frac{U}{q}

59. Electric potential is __________ quantity.
(a) Scalar
(b) Vector
(c) Scalar and vector
(d) None of these

Scalar

60. The difference of electric potential between two points is:
(a) Electric field strength
(b) Electric flux
(c) Electric potential
(d) Potential difference

Potential difference

61. A charge of 5 Coulombs (C) has an electric potential energy of 20 Joules (J). What is the electric potential at that location?
(a) V = 25 \ V
(b) V = 4 \ V
(c) V = \frac{1}{4} \ V
(d) V = 100 \ V

V = 4 \ V

62. If the electric potential at a point is 12 Volts (V), and a charge of 3 Coulombs (C) is placed at that location, what is the electric potential energy at that point?
(a) U = 12 \ J
(b) U = 36 \ J
(c) U = 4 \ J
(d) U = \frac{1}{4} \ J

U = 36 \ J

63. What is the process used in modern power stations to separate dust from smoke particles before releasing them into the environment?
(a) Electrostatic painting
(b) Magnetic separation
(c) Electrostatic precipitation
(d) Chemical filtration

Electrostatic precipitation

64. In electrostatic spray painting, how is the paint applied?
(a) By using a regular spray painter
(b) By electrostatically charging the paint
(c) By manually brushing it onto surfaces
(d) By blowing it onto surfaces with a fan

By electrostatically charging the paint

65. What is the primary cause of lightning?
(a) Magnetic induction
(b) Electrostatic painting
(c) Dielectric breakdown of air

Dielectric breakdown of air

66. What’s the purpose of lightning conductors on structures?
(a) Protect against lightning strikes
(b) Generate electricity
(c) Cause damage
(d) Provide shelter

Protect against lightning strikes

67. How should one stay safe during a thunderstorm?
(a) Stand under tall trees
(b) Stay indoors or in a car
(c) Use metal umbrellas
(d) Run across open fields

Stay indoors or in a car

68. What is the primary function of a capacitor?
(a) To generate electricity
(b) To conduct electricity
(c) To store charge
(d) To measure potential

To store charge

69. In a capacitor, what are the two conductors separated from each other called?
(a) Anode and cathode
(b) Plates
(c) Wires
(d) Insulators

Plates

70. What is the electric potential difference between the positive and negative plates of a capacitor called?
(a) Voltage
(b) Capacitance
(c) Resistance
(d) Current

Voltage

71. What is the insulating medium that separates the plates of a capacitor referred to as?
(a) Conductive material
(b) Dielectric
(c) Electrolyte
(d) Insulator

Dielectric

72. What is the SI unit of capacitance?
(a) Coulomb (C)
(b) Ohm (\Omega)
(d) Watt (W)

73. What is the unit of capacitance typically used in practice?
(a) Coulombs
(d) Amperes

74. What can happen if a capacitor is overfilled by applying too much voltage?
(a) It becomes supercharged
(b) It becomes less efficient
(c) Dielectric breakdown can occur
(d) It generates excess heat

Dielectric breakdown can occur

75. What is the electric field between the plates of a capacitor responsible for when dielectric breakdown occurs?
(a) It causes the plates to repel
(b) It generates excess heat
(c) It dissipates the charge
(d) It leads to sparks and current flow

It leads to sparks and current flow

76. In a capacitor, which factor primarily determines the capacitance?
(a) The voltage applied
(b) The size and shape of the plates
(c) The charge on one conductor
(d) The material of the conductors

The size and shape of the plates

77. What is the term for the ratio of the magnitude of charge on a conductor to the potential difference between the conductors?
(a) Voltage
(b) Resistance
(c) Capacitance
(d) Current

Capacitance

78. One Farad is equal to:
(a) 1 coulomb per volt
(b) 1 ohm
(c) 1 joule
(d) 1 Newton

1 coulomb per volt

79. What is the formula for the capacitance (C) of a capacitor?
(a) C = \frac{Q}{V}
(b) C = Q + V
(c) C = Q – V
(d) C = Q \times V

C = \frac{Q}{V}

80. What is the effect of doubling the voltage across a capacitor on the charge stored?
(a) The charge is halved
(b) The charge remains the same
(c) The charge is doubled
(d) None of these

The charge is doubled

81. Which type of capacitor is most popular for values greater than about 1 microfarad?
(a) Ceramic capacitor
(b) Electrolytic tubular capacitor
(c) Tantalum capacitor
(d) Variable capacitor

Electrolytic tubular capacitor

82. How is an electrolytic tubular capacitor constructed?
(a) Using two ceramic plates
(b) Using copper wires
(c) Using two thin foils of aluminum separated by paper
(d) Using glass sheets

Using two thin foils of aluminum separated by paper

83. What is placed between the two thin foils of aluminum in an electrolytic tubular capacitor?
(a) A ceramic insulator
(b) An electrolyte-soaked paper sheet
(c) A magnet
(d) A vacuum

An electrolyte-soaked paper sheet

84. If a capacitor has a capacitance of 10 microfarads (\mu F) and a voltage of 50 volts (V) applied to it, what is the charge (Q) stored in the capacitor?
(a) 5,000 \ C
(b) 500 \ \mu C
(c) 0.2 \ C
(d) 0.005 \ C

500 \mu C

85. Given a capacitor with a capacitance of 1 farads (F) and a charge (Q) of 2 coulombs (C) , what is the voltage (V) across the capacitor?
(a) 0.02 V
(b) 200 V
(c) 0.002 V
(d) 2 V

2 V

86. A capacitor holds a charge (Q) of 50 coulombs and has a voltage (V) of 10 volts. What is the capacitance (C) of the capacitor?
(a) 50 F
(b) 0.5 F
(c) 5 F
(d) 0.05 F

5 F

87. When capacitors are connected in series, what happens to their total capacitance?
(a) It increases
(b) It decreases
(c) It remains the same
(d) None of these

It decreases

88. If you have three capacitors with capacitances C_1, C_2 \ and \ C_3 connected in series, what is the formula for calculating the total capacitance (C_e) in a series combination?
(a) C_e = C_1 + C_2 + C_3
(b) \frac{1}{C_e} = \frac{1}{C_1} + \frac{1}{C_2} + \frac{1}{C_3}
(c) C_e = C_1 \times C_2 \times C_3
(d) C_e = C_1 - C_2 - C_3

\frac{1}{C_e} = \frac{1}{C_1} + \frac{1}{C_2} + \frac{1}{C_3}

89. In a series combination of capacitors, what quantity stays the same across each capacitor?
(a) Voltage
(b) Charge
(c) Energy
(d) Capacitance

Charge

90. What quantity is distributed across each capacitor connected in series?
(a) Voltage
(b) Charge
(c) Energy
(d) Capacitance

Voltage

91. Two capacitors, C_1 \ and \ C_2 , are connected in series, If C_1 = 5 \ microfarads \ (\mu F) \ and \ C_2 = 10 \ \mu F , what is the value of Ce?
(a) 2 \ \mu F
(b) 3 \ \mu F
(c) 3.33 \ \mu F
(d) 15 \ \mu F

3.33 \ \mu F

92. You have three capacitors in series, C_1 = 4 \ \mu F, C_2 = 6 \ \mu F, \ and \ C_3 = 8 \ \mu F . What is the total capacitance (C_e) of this series combination?
(a) 2 \ \mu F
(b) 3 \ \mu F
(c) 4 \ \mu F
(d) 18 \ \mu F

2 \ \mu F

93. Two capacitors, C_1 \ and \ C_2 , are connected in series. If C_e = 2 \ microfarads \ (\mu F) \ and \ C_2 = 4 \mu F , what is the value of C_1 ?
(a) 1.33 \ \mu F
(b) 4 \ \mu F
(c) 2.67 \ \mu F
(d) 12 \ \mu F

4 \ \mu F

94. When capacitors are connected in parallel, what happens to their total capacitance?
(a) It increases
(b) It decreases
(c) It remains the same
(d) None of these

It increases

95. If you have three capacitors with capacitances C_1, \ C_2, \ and \ C_3 connected in parallel, what is the formula for calculating the total capacitance (C_e) in a parallel combination?
(a) C_e = C_1 + C_2 + C_3
(b) \frac{1}{C_e} = \frac{1}{C_1} + \frac{1}{C_2} + \frac{1}{C_3}
(c) C_e = C_1 \times C_2 \times C_3
(d) C_e = C_1 - C_2 - C_3

C_e = C_1 + C_2 + C_3

96. In a parallel combination of capacitors, what quantity stays the same across each capacitor?
(a) Voltage
(b) Charge
(c) Energy
(d) Capacitance

Voltage

97. What quantity is distributed across each capacitor connected in parallel?
(a) Voltage
(b) Charge
(c) Energy
(d) Capacitance

Charge

98. Two capacitors, C_1 \ and \ C_2 , are connected in parallel. If C_1 = 12 \ microfarads (\mu F) and C_2 = 10 \ \mu F , what is the value of C_e (total capacitance)?
(a) 15 \ \mu F
(b) 22 \ \mu F
(c) 24 \ \mu F
(d) 28 \ \mu F

22 \ \mu F

99. You have three capacitors in parallel, C_1 = 4 \ \mu F, C_2 = 6 \ \mu F, \ and \ C_3 = 8 \ \mu F . What is the total capacitance (C_e) of this parallel combination?
(a) 10 \ \mu F
(b) 12 \ \mu F
(c) 18 \ \mu F
(d) 24 \ \mu F

18 \ \mu F

100. Two capacitors, C_1 \ and \ C_2 , are connected in parallel. If C_e (total capacitance) is 70 \ microfarads \ (\mu F) \ and \ C_2 = 40 \ \mu F , what is the value of C_1 ?
(a) 20 \ \mu F
(b) 30 \ \mu F
(c) 40 \ \mu F
(d) 100 \ \mu F