Here is a question bank for Chapter 13: **Electrostatics**,
### **Short Questions (120)**
#### **Easy (30% - 36 questions)**
1. What is electrostatics?
2. Define electric charge.
3. How are electric charges produced?
4. What is electrostatic induction?
5. Define an electroscope.
6. What is the purpose of an electroscope?
7. How can you detect the presence of a charge?
8. Define Coulomb’s Law.
9. What is meant by a conductor?
10. Define an insulator.
11. What is an electric field?
12. What are electric field lines?
13. Define electrostatic potential.
14. What is a capacitor?
15. What is capacitance?
16. What is the SI unit of capacitance?
17. Name two types of charges.
18. Describe positive and negative charges.
19. What is meant by charging by induction?
20. What is the function of an electroscope?
21. Define an electric field with an example.
22. How do electric field lines indicate the strength of the field?
23. What is an electrostatic potential difference?
24. What is a parallel plate capacitor?
25. Name one application of capacitors.
26. Describe the working of an electroscope.
27. What is the role of capacitors in electronic circuits?
28. How can static electricity be hazardous?
29. Define electric potential energy.
30. What is an electrostatic air cleaner?
31. Describe electrostatic powder painting.
32. What is the difference between conductors and insulators?
33. What is the importance of capacitors in circuits?
34. Describe one use of capacitors in daily life.
35. How can static electricity cause a fire?
36. What is grounding in electrostatics?
#### **Moderate (40% - 48 questions)**
37. Describe the principle of Coulomb’s Law.
38. How are charges transferred in electrostatic induction?
39. Describe how an electroscope can detect the type of charge.
40. What is the electric field intensity?
41. How is the electric field related to electric force?
42. Describe the difference between electric field and electric potential.
43. How do capacitors store energy?
44. Describe the purpose of grounding in electrostatics.
45. Explain the term ‘electric field lines.’
46. What is an electric dipole?
47. Describe how a parallel plate capacitor works.
48. What are the factors affecting capacitance?
49. Define dielectric material.
50. Describe the process of electrostatic induction.
51. How does a charged body induce charge on another body?
52. Explain how an electroscope can identify conductors and insulators.
53. How does the distance between charges affect the electric force?
54. Describe the working principle of an electrostatic air cleaner.
55. How does Coulomb’s Law apply to point charges?
56. Describe how static electricity can be useful in powder painting.
57. Explain why electric field lines never cross each other.
58. What is the relationship between electric potential and electric field?
59. Describe the role of a dielectric in a capacitor.
60. What are some examples of applications of capacitors?
61. How do capacitors release stored energy?
62. Describe a real-life application of static electricity.
63. How can static electricity be generated by friction?
64. Explain the concept of electric field lines between like charges.
65. What is the formula for Coulomb’s Law?
66. Describe the method of charging by conduction.
67. Explain why a charged body attracts neutral objects.
68. How does an electroscope detect a charged body?
69. Describe the uses of capacitors in electrical appliances.
70. What are the hazards associated with static electricity?
71. Explain the importance of an electric field in electrostatics.
72. Describe the concept of an electric dipole moment.
73. What is the effect of an electric field on a charged particle?
74. How do conductors and insulators respond to static charges?
75. Describe how electric field intensity is measured.
76. Explain the role of electrostatic air cleaners in reducing pollution.
77. What is the purpose of a dielectric in a capacitor?
78. Describe how static electricity can be a fire hazard.
79. Explain the function of a capacitor in a camera flash.
80. Describe the process of electrostatic powder painting.
81. How does an electroscope show the presence of charges?
82. Explain the importance of grounding in buildings.
83. Describe how electric field lines show the direction of the field.
84. What are some uses of capacitors in electronic devices?
85. Explain the purpose of capacitors in power supply systems.
86. How does electrostatic induction differ from conduction?
87. Describe the effect of increasing the distance between charged bodies.
88. How can static electricity be controlled in industries?
89. Describe the role of capacitors in reducing electrical noise.
90. How does the presence of a dielectric increase capacitance?
91. What are the advantages of using electrostatic powder coating?
92. Explain how a capacitor works in a fan regulator.
93. Describe the phenomenon of static cling in clothes.
94. Explain why static electricity can damage sensitive electronic components.
#### **Tough (30% - 36 questions)**
95. Explain the process of charging by electrostatic induction.
96. Derive the formula for the force between two charges using Coulomb’s Law.
97. How is electrostatic potential related to work done?
98. Explain the significance of Coulomb’s Law in electrostatics.
99. How do electric field lines differ between positive and negative charges?
100. Explain why electric field lines are perpendicular to the surface of conductors.
101. Derive the formula for the capacitance of a parallel plate capacitor.
102. Explain how a charged object can induce an opposite charge in a nearby conductor.
103. Describe how electric field intensity changes with distance from the charge.
104. Explain how an electroscope detects different types of charges.
105. Explain the concept of electric flux.
106. How does the electric field intensity affect the force on a charged particle?
107. Explain the role of dielectric constant in capacitance.
108. Derive the relationship between electric field and potential difference.
109. Explain how electrostatic air cleaners use electric fields to trap particles.
110. Describe the applications of electrostatics in photocopiers.
111. How does Coulomb’s Law apply to multiple charges?
112. Explain the relationship between charge and electrostatic potential energy.
113. Describe the role of capacitors in filtering circuits.
114. Explain how grounding prevents static charge buildup.
115. Explain the phenomenon of electric polarization.
116. Describe the energy stored in a capacitor and its significance.
117. Explain why static electricity can cause a spark near flammable substances.
118. Describe how electrostatic charges are used in inkjet printers.
119. Explain how an electrostatic air cleaner works.
120. How does the strength of the electric field affect electric force?
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### **Long Questions (10)**
#### **Easy (30% - 3 questions)**
1. Explain the process of electrostatic induction and describe its applications.
2. Describe Coulomb’s Law and explain how it governs the force between two charges.
3. Explain the working and use of an electroscope for detecting electric charges.
#### **Moderate (40% - 4 questions)**
4. Describe the electric field and electric field lines, and explain their significance in electrostatics.
5. Explain the concept of capacitance, including the working and uses of capacitors in electronic circuits.
6. Discuss the hazards of static electricity and the methods to prevent them in daily life.
7. Describe the applications of electrostatics in electrostatic air cleaners and electrostatic powder painting.
#### **Tough (30% - 3 questions)**
8. Derive the formula for the electric field due to a point charge and explain its importance in electrostatics.
9. Explain the working of a parallel plate capacitor, including the role of the dielectric and the formula for capacitance.
10. Discuss the role of electrostatic principles in photocopiers, inkjet printers, and electrostatic air cleaners.