Electrostatics — Class 11 MCQs with Answers
Class 11 CBSE Physics · Chapter 304
40 practice questions · 20 Easy · 20 Medium · Updated
Practise the most important Class 11 CBSE Physics questions from Chapter 304, "Electrostatics". You get 4 timed quizzes made from 40 NCERT-based MCQs, with answers and explanations. The questions are split into 20 Easy and 20 Medium. Warm up on the basics, then move on to the exam-level questions that set top scorers in CBSE & Maharashtra HSC Board exams, JEE Main, MHT-CET, JEE Advanced and NEET UG apart.
To score well in "Electrostatics", focus on numericals, derivations and applying concepts. Each MCQ here is timed and uses exam-style marking (+4 correct, −1 wrong, 0 skipped). This trains you to stay accurate under time pressure, as real papers need. Every question has a short explanation, so a wrong answer becomes a quick lesson. It is the fastest way to fix gaps before a test.
Use this chapter for focused revision. Start with the Easy set to check your basics on Electrostatics, then move to Medium to practise applying them. Your accuracy, streaks and XP save automatically. This chapter also adds to your overall Class 11 Physics mastery score. 6 sample questions are solved in full below, with the answer and a worked explanation. Sign in free to start practising.
Key concepts: Electrostatics (Class 11 Physics)
Electrostatics from first principles: the three properties of charge, Coulomb's law and how a medium weakens it, the electric field and its lines, the electric dipole and the torque it feels, and Gauss's law with the three standard symmetries it makes trivial. Energy in electrostatics: potential and potential energy, how the field is the negative gradient of potential, equipotential surfaces, conductors and electrostatic shielding, dielectrics and polarisation, capacitance and the parallel plate capacitor, series and parallel combinations, and the energy stored in a charged capacitor.
- Properties of electric charge
- Charge is additive, is conserved in every process, and is quantised in multiples of the elementary charge e = 1.6 × 10⁻¹⁹ C.
- Quantisation of charge
- Any observable charge is an integral multiple of e, so a body can never carry a charge like 1.5e. Free quarks, with fractional charge, are never observed in isolation.
- Conservation of charge
- The total charge of an isolated system is constant. Charging by friction transfers electrons between bodies; it never creates or destroys charge.
- Coulomb's law
- The force between two point charges is proportional to the product of the charges and inversely proportional to the square of their separation, acting along the line joining them.
Electrostatics — important questions & MCQs with answers (Class 11 Physics)
6 solved questions from this chapter's difficulty levels, each with its answer and explanation. The other 34 are timed and scored when you sign in.
- Q1Easy
The SI unit of electric charge is:
A.AmpereB.TeslaC.VoltD.Coulomb✓ CorrectAnswer: D. Coulomb
Explanation: 1 coulomb = 1 ampere × 1 second.
- Q2Easy
The SI unit of electric field is:
A.C/mB.C·mC.N/C (or V/m)✓ CorrectD.J/CAnswer: C. N/C (or V/m)
Explanation: E = F/q ⇒ N/C, equivalent to V/m.
- Q3Easy
The SI unit of electric flux is:
A.V/mB.N/CC.C/m²D.N·m²/C✓ CorrectAnswer: D. N·m²/C
Explanation: Φ = E·A has units (N/C)(m²) = N·m²/C, also V·m.
- Q4Medium
Two charges +q and +q are placed r apart. If the distance is doubled, the force between them becomes:
A.F/4✓ CorrectB.F/2C.2FD.4FAnswer: A. F/4
Explanation: F ∝ 1/r². Doubling r → F becomes F/4.
- Q5Medium
Electric field due to a point charge q at distance r is:
A.kq/rB.kq/r²✓ CorrectC.kq²/r²D.kq·rAnswer: B. kq/r²
Explanation: E = kq/r², where k = 1/(4πε₀).
- Q6Medium
Gauss's law states that electric flux through a closed surface equals:
A.q × ε₀B.ε₀ · AC.q · AD.q / ε₀✓ CorrectAnswer: D. q / ε₀
Explanation: Φ = q_enclosed / ε₀ — fundamental in deriving E for symmetric distributions.
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Start this chapter free →Electrostatics — FAQs
What are the key concepts in Class 11 Physics Electrostatics?+
Electrostatics from first principles: the three properties of charge, Coulomb's law and how a medium weakens it, the electric field and its lines, the electric dipole and the torque it feels, and Gauss's law with the three standard symmetries it makes trivial. Energy in electrostatics: potential and potential energy, how the field is the negative gradient of potential, equipotential surfaces, conductors and electrostatic shielding, dielectrics and polarisation, capacitance and the parallel plate capacitor, series and parallel combinations, and the energy stored in a charged capacitor. Key ideas include Properties of electric charge, Quantisation of charge, Conservation of charge, Coulomb's law.
What does Class 11 Physics Chapter 304 (Electrostatics) cover on XamBaaz?+
It has 40 NCERT-based MCQs on "Electrostatics": 20 Easy and 20 Medium. Together they make 4 timed quizzes, and you never get the same set twice. Every question has an instant explanation. They help you prepare for CBSE & Maharashtra HSC Board exams, JEE Main, MHT-CET, JEE Advanced and NEET UG.
Are these "Electrostatics" questions free to practise?+
Yes. Sign in with Google to practise "Electrostatics" free. Full unlimited access is ₹999/year on a launch offer until 1 December 2026. No chapter is charged separately.
How should I revise "Electrostatics" for the exam?+
Start with the Easy quiz to check your basics, then try Medium to practise applying them. There are 4 timed quizzes on this chapter, so you can come back for a fresh set instead of one you have seen. Read each explanation, retry the questions you miss, and track your accuracy until it stays high.
Are these "Electrostatics" MCQs available with answers?+
Yes. 6 sample questions are shown here in full, each with the correct option and a step-by-step "Why" explanation. Sign in free with Google to start practising, with instant scoring.
Is there negative marking in the "Electrostatics" quizzes?+
Yes. The timed quizzes use exam-style marking: +4 for a right answer, −1 for a wrong one and 0 for a skip, the same negative marking as JEE Main, JEE Advanced and NEET UG. MHT-CET and CBSE board papers have no negative marking. Our mocks for those are scored their way.
What are the important questions from Electrostatics (Class 11 Physics)?+
The questions that matter most test Properties of electric charge, Quantisation of charge, Conservation of charge, Coulomb's law. This page shows 6 solved important MCQs with answers and explanations; all 40 questions on the chapter are available as timed quizzes once you sign in.
Is there an online quiz for Electrostatics?+
Yes — Class 11 Physics Electrostatics has timed online quizzes at Easy and Medium levels, with instant scoring and a worked explanation on every question. The first quiz on the chapter is free.