⚡ Chapter 15: Electrostatics – Multiple Choice Questions
Prepared by Muhammad Tayyab, Subject Specialist Physics, Govt Christian High School Daska. Based on PECTAA 2026 syllabus (National Curriculum 2023).
📖 What's Inside: This chapter covers electrical breakdown, corona discharge, Coulomb's law, and applications of electrostatics. Each MCQ is presented with the correct answer and detailed explanation as per the official PECTAA 2026 Physics curriculum. Perfect for Punjab Boards (Lahore, Gujranwala, Multan, etc.) and all BISE boards across Pakistan.
📚 Related Resources – Chapter 15: Electrostatics
Electrostatics covers Coulomb's law, electric field, potential, capacitance, charging by induction, electroscope, lightning, corona discharge, and applications. Includes solved examples and numerical problems.
📖 Multiple Choice Questions (PECTAA 2026)
15.1 Electrical breakdown is:
✅ Correct Answer: A
Strong electric fields strip electrons from gas molecules, ionizing the gas and making it conductive.
Strong electric fields strip electrons from gas molecules, ionizing the gas and making it conductive.
15.2 Which of the following is a visible example of electrical breakdown?
✅ Correct Answer: A
Corona discharge is a visible, luminous glow caused by the localized ionization of air near sharp conductors.
Corona discharge is a visible, luminous glow caused by the localized ionization of air near sharp conductors.
15.3 What happens when two unlike charges are brought close to each other?
✅ Correct Answer: A
According to the fundamental law of electrostatics, unlike charges experience an attractive force.
According to the fundamental law of electrostatics, unlike charges experience an attractive force.
15.4 According to Coulomb's law, what happens to the attraction of two oppositely charged objects as their distance of separation increases?
✅ Correct Answer: A
Coulomb's law follows an inverse-square relationship; increasing the distance reduces the electrostatic force.
Coulomb's law follows an inverse-square relationship; increasing the distance reduces the electrostatic force.
15.5 The device which works on the principle of electrostatics:
✅ Correct Answer: B
Photocopiers use static electricity to attract and transfer toner powder onto the paper.
Photocopiers use static electricity to attract and transfer toner powder onto the paper.
📐 Key Formulas – Electrostatics
Coulomb's Law: \( F = k \frac{q_1 q_2}{r^2} \)
Electric Field Intensity: \( E = \frac{F}{q_0} \)
Electric Field (Point Charge): \( E = k \frac{q}{r^2} \)
Electric Potential: \( V = \frac{W}{q} \)
Coulomb's Constant: \( k = 9 \times 10^9 \, \text{Nm}^2\text{C}^{-2} \)
Quantization of Charge: \( q = ne \)
Unit 10Thermal Physics
Unit 11Transfer of Thermal Energy
Unit 12Waves
Unit 13Sound
Unit 14Light
Unit 15✨ Electrostatics
Unit 16Electricity
Unit 17Electromagnetism
Unit 18Electromagnetic Induction & EM Waves
Unit 19Electronics
Unit 20Atomic and Nuclear Physics
Unit 21Space and Environment
📖 Complete syllabus coverage for Class 10 Physics (PECTAA 2026) – Units 10 to 21
💡 Exam Tip:
For board exams, read each question carefully and eliminate obviously wrong options. These MCQs follow the PECTAA 2026 pattern and are prepared by Subject Specialist Muhammad Tayyab.
Created by Hira Science Academy | Aligned with PECTAA 2026 Syllabus