Class 12 Physics — Chapter 2: Electrostatic Potential and Capacitance
90 practice questions · 30 Easy · 30 Medium · 30 Hard
Practise Class 12 Physics Chapter 2, "Electrostatic Potential and Capacitance", with 90 NCERT-aligned multiple-choice questions. The set is split into 30 Easy, 30 Medium and 30 Hard questions, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams, JEE Main, JEE Advanced and NEET UG.
"Electrostatic Potential and Capacitance" is one of the chapters where numerical problem-solving, derivations and conceptual application really pays off. Each MCQ on this chapter is timed and uses exam-grade marking (+2 correct, −1 wrong, 0 skipped), training the same accuracy-under-pressure that real papers demand. Every question carries a short explanation, so a wrong answer becomes a quick lesson rather than a dead end — the fastest way to close gaps before a test.
Use this chapter as targeted revision: attempt the Easy set first to confirm your basics on Electrostatic Potential and Capacitance, then move to Medium and Hard to test application and problem-solving. Your accuracy, streaks and XP save automatically, and the chapter feeds into your overall Class 12 Physics mastery score. A few sample questions are shown below; sign in free to practise all 90.
Key concepts: Electrostatic Potential and Capacitance (Class 12 Physics)
This chapter covers electric potential and potential energy, equipotential surfaces, capacitors and capacitance, and the energy stored in a capacitor.
- Electric potential
- Work done per unit charge to bring a positive test charge from infinity to a point; V = (1/4πε₀)(q/r) for a point charge.
- Equipotential surfaces
- Surfaces of constant potential; the electric field is always perpendicular to them and no work is done moving a charge along them.
- Capacitance
- C = Q/V, the charge stored per unit potential difference; depends on geometry and the dielectric.
- Parallel-plate capacitor
- C = ε₀A/d (vacuum); inserting a dielectric of constant K multiplies C by K.
- Combinations & energy
- Capacitors add directly in parallel and reciprocally in series; energy stored is U = ½CV².
Key formulas — Electrostatic Potential and Capacitance
💡 Exam tips for Electrostatic Potential and Capacitance
- Potential is a scalar — add algebraically with sign, unlike the vector field E.
- Capacitors combine OPPOSITE to resistors: add in parallel, reciprocals in series.
Sample questions
SI unit of capacitance:
1 F = 1 C/V.
Capacitance of parallel plate (vacuum):
C = ε₀A/d.
Energy stored in capacitor:
U = ½CV² = ½Q²/C.
Electrostatic Potential and Capacitance — FAQs
What are the key concepts in Class 12 Physics Electrostatic Potential and Capacitance?+
This chapter covers electric potential and potential energy, equipotential surfaces, capacitors and capacitance, and the energy stored in a capacitor. Key ideas include Electric potential, Equipotential surfaces, Capacitance, Parallel-plate capacitor, Combinations & energy.
What does Class 12 Physics Chapter 2 (Electrostatic Potential and Capacitance) cover on XamBaaz?+
It covers 90 NCERT-aligned MCQs on "Electrostatic Potential and Capacitance" — 30 Easy, 30 Medium and 30 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams, JEE Main, JEE Advanced and NEET UG.
Are these "Electrostatic Potential and Capacitance" questions free to practise?+
Yes — sign in with Google to practise "Electrostatic Potential and Capacitance" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.
How should I revise "Electrostatic Potential and Capacitance" for the exam?+
Start with the Easy quiz to confirm your fundamentals, then attempt Medium and Hard for application-level practice. Review each explanation, retry the questions you miss, and track your accuracy on this chapter until it is consistently high.
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