The Electrostatic Potential and Capacitance NCERT PDF hosted below is the 2026-27 NCERT edition of Class 12 Physics Chapter 2 Electrostatic Potential and Capacitance. CBSE Boards drop 7 marks from this chapter and JEE Main pulls about 4% of its Physics paper from it, which is why the Electrostatic Potential and Capacitance NCERT PDF is the first resource teachers prescribe. The Electrostatic Potential and Capacitance NCERT PDF carries every section, example and end-of-chapter exercise printed in the official book.
- CBSE Class 12 Weightage: 6–8 marks (Electrostatics unit, 17 marks combined with Chapter 1)
- JEE Main Weightage: 3–4% (1–2 questions per shift)
- NEET Weightage: 1–2 questions per year
Both downloads of the Electrostatic Potential and Capacitance NCERT PDF on this page are free and updated for the 2026-27 NCERT syllabus.
This NCERT Book PDF page is curated by Collegedunia's subject experts, mapped to the 2026-27 NCERT print, and weightage cross-checked against the last five CBSE Board, JEE Main, and NEET papers.
The chapter is the second half of Unit I Electrostatics. It runs 36 pages with 10 solved Examples and 11 end-of-chapter Exercises.
Also Check:
- Electrostatic Potential and Capacitance Class 12 NCERT Solutions
- Electrostatic Potential and Capacitance Class 12 Notes
Why Electrostatic Potential and Capacitance Matters for CBSE Boards, JEE Main, and NEET
Chapter 2 is the workhorse of the Electrostatics unit. With Chapter 1, it claims a 17-mark slice of the 70-mark Class 12 Physics paper. The scalar approach (V rather than vector E) is why CBSE places long-derivation 3-mark and 5-mark questions almost every year.
In the last five CBSE Board papers, at least one capacitor-network numerical and one dipole-potential derivation appear every year.
JEE Main treats Sections 2.11 to 2.15 as standalone numerical territory. NEET usually picks a single MCQ on equipotential surfaces or dipole PE. Reading the chapter PDF straight from NCERT is the difference between a 6-mark and an 8-mark Electrostatics score.
Electrostatic Potential and Capacitance Video Chapter Walkthrough
Source: NCERT Wallah on YouTube
How will the Electrostatic Potential and Capacitance NCERT PDF on Collegedunia Help You?
The official NCERT chapter is the single most-cited source for every CBSE marking scheme. Downloading it lets you:
- Read the current 2026-27 syllabus end-to-end with the exact figures and equipotential-surface diagrams board markers expect.
- Re-do every NCERT Example for capacitor combinations and dielectric problems, since markers reward textbook-style steps over short cuts.
- Print or offline-read using the HD version with sharp parallel-plate and dielectric figures.
- Identify high-yield sections using the breakdown below, weighting Sections 2.11 to 2.15 over Section 2.10.
3-Day Study Plan for Class 12 Physics Chapter 2 Electrostatic Potential and Capacitance PDF
The 36-page chapter splits cleanly across three working days. Hours assume Chapter 1 is already revised, since every derivation in Sections 2.3 to 2.5 builds on the field expression of Chapter 1.
| Day | Sections | Examples | Exercises |
|---|---|---|---|
| Day 1 (3h) | 2.1 to 2.6 (V, Equipotential) | 2.1 to 2.3 | 2.1 to 2.3 |
| Day 2 (3h) | 2.7 to 2.10 (PE, Conductors, Dielectrics) | 2.4 to 2.6 | 2.4 |
| Day 3 (4h) | 2.11 to 2.15 (C, Combinations, Energy) | 2.7 to 2.10 | 2.5 to 2.11 |
If you have only two days, merge Day 1 and Day 2 into one long session and reserve a full evening for Day 3. The capacitor block from 2.11 onwards is where the 5-mark CBSE question almost always lives.
Electrostatic Potential and Capacitance NCERT Book Section-by-Section Breakdown
The chapter is split into 15 numbered sections over roughly 36 pages (pp. 45 to 80 of the printed textbook). Use the table as a reading checklist.
| Section | Title | Approx. Page Range | Core Idea |
|---|---|---|---|
| 2.1 | Introduction | 45–47 | PE concept carries over from gravitation |
| 2.2 | Electrostatic Potential | 47–48 | V defined as work per unit positive charge |
| 2.3 | Potential due to a Point Charge | 48–49 | V = kQ/r derivation |
| 2.4 | Potential due to an Electric Dipole | 49–51 | Axial, equatorial, general-angle expressions |
| 2.5 | Potential due to a System of Charges | 51–53 | Superposition for V |
| 2.6 | Equipotential Surfaces | 53–55 | Shape for point, dipole, uniform field; E ⊥ V |
| 2.7 | Potential Energy of a System of Charges | 55–57 | PE of two- and three-charge configurations |
| 2.8 | Potential Energy in an External Field | 57–60 | Single charge, two-charge, dipole PE = −p·E |
| 2.9 | Electrostatics of Conductors | 60–63 | Six properties of conductors in equilibrium |
| 2.10 | Dielectrics and Polarisation | 63–66 | Polar vs non-polar, polarisation vector P |
| 2.11 | Capacitors and Capacitance | 66–67 | C = Q/V, units, dielectric strength |
| 2.12 | The Parallel Plate Capacitor | 67–69 | C₀ = ε₀A/d full derivation |
| 2.13 | Effect of Dielectric on Capacitance | 69–71 | C = Kε₀A/d, dielectric constant K |
| 2.14 | Combination of Capacitors | 71–74 | Series and parallel combination formulas |
| 2.15 | Energy Stored in a Capacitor | 74–77 | U = ½CV², energy density u = ½ε₀E² |
The first six sections build the scalar framework. Sections 2.11 to 2.15 alone account for over 50% of this chapter's CBSE marks. Plan your second pass to spend twice as long on the capacitance block.
Every NCERT Intext Example in Class 12 Physics Chapter 2 Electrostatic Potential and Capacitance
The 10 solved Examples model the steps a CBSE marker rewards. Attempt each one with the book closed before the end-of-chapter exercises.
| Example | Sub-topic | What it Covers |
|---|---|---|
| 2.1 | Point-charge potential | V = kQ/r and W = qV |
| 2.2 | Potential and PE for two charges | Superposition of V, PE computation |
| 2.3 | Equipotential surface from field lines | Reading equipotential density |
| 2.4 | Four charges at a square's corners | Net V and net PE at centre |
| 2.5 | Dipole in external field PE | U = −p·E, angle-dependent change |
| 2.6 | Dipole moment of a polar molecule | Dipole moment from molecular dimensions |
| 2.7 | Conductor and dielectric properties | Concept-level on E inside conductors |
| 2.8 | Dielectric slab inside parallel plates | C change for full or partial insertion |
| 2.9 | Four-capacitor 500 V network | Equivalent C and charge on each |
| 2.10 | Sharing of charge between two capacitors | Energy loss in 900 pF sharing problem |
Example 2.9 and Example 2.10 are the two patterns CBSE recycles most often as 3-mark and 5-mark questions.
How to Read the Class 12 Physics Chapter 2 NCERT for Boards and JEE
A four-pass approach works because the first half is concept-heavy and the second half is numerical-heavy.
- Pass 1 (45 min): Skim Sections 2.1 to 2.6 for the scalar-potential framework.
- Pass 2 (90 min): Read Sections 2.7 to 2.10. Solve Examples 2.1 to 2.6 and re-derive dipole potential.
- Pass 3 (90 min): Sections 2.11 to 2.13 with Examples 2.7 and 2.8. The parallel-plate-with-dielectric derivation is a recurring CBSE 3-mark question.
- Pass 4 (120 min): Sections 2.14 and 2.15 with Examples 2.9 and 2.10. Redo capacitor-network Exercises 2.5 to 2.11 without the book.
What Changed in Electrostatic Potential and Capacitance for the 2026-27 NCERT
The 15-section structure is intact. Every formula CBSE, JEE Main, and NEET need is preserved: dipole potential, equipotential surfaces, capacitance, combinations, and energy stored.
Detailed kept-trimmed-removed table: Electrostatic Potential and Capacitance Class 12 Notes.
Top 5 Formulae from Class 12 Physics Chapter 2 for Quick Recall
These five relations cover nearly every CBSE 5-marker and JEE Main numerical from Chapter 2. The complete master table with units and a "when to use which" decision tree is on the dedicated Formula Sheet.
| Quantity | Formula |
|---|---|
| Potential due to a point charge | V = (1 / 4πε₀) · Q / r |
| Potential due to a dipole (axial) | V = (1 / 4πε₀) · p cos θ / r² |
| Capacitance of a parallel-plate capacitor (with dielectric) | C = Kε₀A / d |
| Equivalent capacitance (series and parallel) | 1/C_s = Σ 1/Cᵢ ; C_p = Σ Cᵢ |
| Energy stored in a capacitor | U = ½ CV² = ½ Q² / C = ½ QV |
Full master table: Electrostatic Potential and Capacitance Class 12 Physics Formula Sheet
Top 3 Electrostatic Potential and Capacitance Previous Year Question Trends
Three patterns recur across CBSE, JEE Main, and NEET papers from 2025 backwards:
- Equivalent capacitance plus charge on a network: CBSE 2025 (5-mark), JEE Main 2025, NEET 2024.
- Dipole potential and field (axial or equatorial): CBSE almost every year 2022 to 2025, usually a 3-mark question.
- Energy stored and energy lost in capacitor sharing: recurring CBSE 2 or 3-mark question (2022, 2023, 2025) and basis of several JEE numericals.
Together these patterns account for around 70% of Chapter 2 marks in CBSE Boards over five years.
Full year-wise PYQ map: Electrostatic Potential and Capacitance NCERT Solutions with PYQ Map
Related Links:
- Electric Charges and Fields Class 12 Notes (Chapter 1 prerequisite)
- Current Electricity Class 12 Notes (Chapter 3 follow-up)
Electrostatic Potential and Capacitance Weightage Compared Across Class 12 Physics Chapters
The visual below maps CBSE Class 12 Physics marks across all 14 NCERT chapters, averaged over the last five board papers.
More Electrostatic Potential and Capacitance Class 12 Physics Resources
NCERT Book PDF for Class 12 Physics: All Chapters
Other Class 12 Physics NCERT Book PDFs you can grab as free downloads:
| Chapter | Resource |
|---|---|
| Chapter 1 | Electric Charges and Fields NCERT PDF |
| Chapter 3 | Current Electricity NCERT PDF |
| Chapter 4 | Moving Charges and Magnetism NCERT PDF |
| Chapter 5 | Magnetism and Matter NCERT PDF |
| Chapter 6 | Electromagnetic Induction NCERT PDF |
| Chapter 7 | Alternating Current NCERT PDF |
| Chapter 8 | Electromagnetic Waves NCERT PDF |
| Chapter 9 | Ray Optics and Optical Instruments NCERT PDF |
| Chapter 10 | Wave Optics NCERT PDF |
| Chapter 11 | Dual Nature of Radiation and Matter NCERT PDF |
| Chapter 12 | Atoms NCERT PDF |
| Chapter 13 | Nuclei NCERT PDF |
| Chapter 14 | Semiconductor Electronics NCERT PDF |
Electrostatic Potential and Capacitance NCERT PDF: available above as a free PDF download, fully aligned to the 2026-27 NCERT release.
Electrostatic Potential and Capacitance NCERT PDF - Frequently Asked Questions
Ques. Where can I download the Electrostatic Potential and Capacitance NCERT PDF for free?
Ans. You can download the Electrostatic Potential and Capacitance NCERT PDF directly from this Collegedunia page. Both the Normal and HD versions are available, and both are free.
Ques. Is this the 2026-27 NCERT?
Ans. Yes. The PDF on this page reflects the current 2026-27 NCERT for Class 12 Physics Chapter 2. The 15-section structure, the 10 intext examples, and the 11 end-of-chapter exercises are all intact in the new edition; only the Van de Graaff generator section has been dropped and polarisation simplified.
Ques. How many pages and exercises does the 12th Physics Chapter 2 NCERT contain?
Ans. The chapter runs about 36 pages (pp. 45 to 80 in the printed textbook), with 10 solved intext examples and 11 end-of-chapter exercises. Most students need 8 to 10 hours total for the first reading plus exercise attempt.
Ques. What is the CBSE weightage of Electrostatic Potential and Capacitance for the Class 12 Board exam?
Ans. Electrostatic Potential and Capacitance NCERT PDF contributes 6 to 8 marks to the Class 12 Physics Board exam. Combined with Chapter 1 Electric Charges and Fields, the Electrostatics unit accounts for 17 marks in the 70-mark theory paper, more than any other unit.
Ques. Which sections of the chapter are most important for CBSE and JEE?
Ans. Sections 2.4 (Dipole Potential), 2.6 (Equipotential Surfaces), 2.12 (Parallel-plate Capacitor), 2.13 (Effect of Dielectric), 2.14 (Combination of Capacitors), and 2.15 (Energy Stored) account for the bulk of CBSE and JEE marks year after year. The capacitor-network problem from Example 2.9 and the dipole-potential derivation are the two most-recycled stems.
Ques. Is the NCERT Book PDF enough to score well in Chapter 2 for boards?
Ans. Yes, for the Class 12 Board exam the NCERT Book is sufficient if you complete every intext example and every end-of-chapter exercise. For JEE Main and NEET, pair the NCERT chapter with the NCERT Exemplar problems and the last five years of previous-year questions.
Ques. How is this chapter linked to Chapter 1 Electric Charges and Fields?
Ans. Chapter 1 sets up the electric field E and Gauss's law. Chapter 2 then uses these to define electric potential V and to derive capacitance, treating the same physics through a scalar lens. The two chapters are best studied together as the 17-mark Electrostatics unit.
Ques. Has anything been removed from Chapter 2 in the new NCERT edition?
Ans. The Van de Graaff generator section that older editions carried has been removed. The polar versus non-polar dielectric discussion is preserved but reduced to a qualitative paragraph, and no derivation of polarisation vector P is expected. All numerical exercises and the 10 solved Examples remain unchanged.
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