Class 12 Physics Chapter 6 Electromagnetic Induction builds on Faraday's law, Lenz's law, and inductance to explain how changing magnetic fields create current. The chapter carries 5 marks in CBSE and is tested regularly in JEE Main and NEET. This page hosts the Class 12 Physics Chapter 6 formula sheet PDF for download and revision.
- 5 marks in CBSE - covers Faraday's law, Lenz's law, inductance, and the AC generator.
- JEE Main: 3-4 percent weightage; inductance and motional EMF numericals appear every year.
- NEET: 1-2 MCQs per year on Lenz's law and eddy current applications.
Class 12 Physics Chapter 6 Formula Sheet: Complete Reference
The 8 formulas below cover every numerical in the chapter. Each row gives the concept, the formula, and the SI unit.
| Concept | Formula | SI Unit |
|---|---|---|
| Magnetic flux | phi = B A cos theta | weber |
| Faraday's law | EMF = minus d(phi)/dt | volt |
| Motional EMF | EMF = B l v | volt |
| Self inductance (solenoid) | L = mu_0 N² A / l | henry |
| EMF in inductor | EMF = minus L dI/dt | volt |
| Mutual inductance | M = mu_0 N_1 N_2 A / l | henry |
| Energy stored in inductor | U = (1/2) L I² | joule |
| AC generator EMF | EMF = N A B omega sin(omega t) | volt |
Electromagnetic Induction Video Lecture: Class 12 Physics Chapter 6
Source: JEE Wallah on YouTube
Faraday's law: induced EMF from changing flux.
Topic-by-Topic Breakdown: Physics Class 12 Chapter 6 Formula Sheet
The chapter divides into 6 sub-topic blocks. Each block has its own characteristic formulas:
- Magnetic flux: 1-mark on phi = B . A = B A cos theta
- Faraday's law of induction: 3-mark derivation of EMF = -d(phi)/dt
- Lenz's law: 2-mark on direction of induced current
- Motional EMF: 3-mark on EMF = B l v
- Self and mutual inductance: 5-mark derivation L = mu_0 N² A / l, M = mu_0 N_1 N_2 A / l
- AC generator: 3-mark on EMF = N A B omega sin(omega t)
Electromagnetic Induction Weightage in CBSE Class 12 Physics
The table below maps how Chapter 6 weightage compares with every other chapter. Marks are CBSE board averages over the last five papers.
| Chapter | Topic | Avg CBSE Marks |
|---|---|---|
| Ch 1 | Electric Charges and Fields | 6 marks |
| Ch 2 | Electrostatic Potential and Capacitance | 7 marks |
| Ch 3 | Current Electricity | 7 marks |
| Ch 4 | Moving Charges and Magnetism | 6 marks |
| Ch 5 | Magnetism and Matter | 3 marks |
| Ch 6 | Electromagnetic Induction | 5 marks |
| Ch 7 | Alternating Current | 6 marks |
| Ch 8 | Electromagnetic Waves | 2 marks |
| Ch 9 | Ray Optics and Optical Instruments | 7 marks |
| Ch 10 | Wave Optics | 5 marks |
| Ch 11 | Dual Nature of Radiation and Matter | 4 marks |
| Ch 12 | Atoms | 3 marks |
| Ch 13 | Nuclei | 3 marks |
| Ch 14 | Semiconductor Electronics | 6 marks |
Electromagnetic Induction Previous Year Questions Weightage (2021 to 2026)
The table below maps every CBSE Board, JEE Main, and NEET appearance of Class 12 Physics Chapter 6 topics over the last six sessions.
| Year | CBSE Board | JEE Main | NEET |
|---|---|---|---|
| 2026 | Mutual inductance of coaxial solenoids (5 marks) | Self inductance of long solenoid (4 marks) | Faraday's law and induced EMF (1 question) |
| 2025 | Faraday's law statement and EMF calculation (3 marks) | Motional EMF on a rotating rod | Lenz's law direction MCQ |
| 2024 | Lenz law application (3 marks) | Mutual inductance between solenoids | Eddy currents MCQ |
| 2023 | Self inductance of long solenoid (3 marks) | EMF in square coil in changing field | Faraday's law direction |
| 2022 | Eddy currents and electromagnetic damping (2 marks) | AC generator EMF derivation | Motional EMF problem |
| 2021 | - | Mutual inductance numerical | - |
Common Mistakes in Electromagnetic Induction: Class 12 Physics Chapter 6
Mistake 1: Substituting values before simplifying the formula symbolically. Always rearrange to isolate the unknown first.
Mistake 2: Forgetting unit conversion. SI units everywhere unless the question specifies otherwise.
Mistake 3: Confusing self-inductance and mutual-inductance formulas. The formula sheet table separates them clearly by row.
Mistake 4: Missing the negative sign in Faraday's law. The minus sign encodes Lenz's law and costs marks in CBSE derivations.
Each one costs 1 to 2 marks.
Student Feedback
What 11,920 students told us about the Class 12 Physics Chapter 6 formula sheet:
- 74% of students surveyed placed the formula sheet at the top of their revision priority list.
- 58% said they reviewed the formula sheet daily in the last 7 days before the boards.
- 4 out of 5 students keep a printed copy of the formula sheet in their notebook.
- Average revision time per formula sheet: 12 minutes per chapter for a focused pass.
- 67% used the formula sheet alongside the Chapter Notes during night-before revision.
Source: 2025-26 Class 12 Physics student poll. Sample of 11,920 students from CBSE schools across 16 states.
Electromagnetic Induction Formula Sheet for CBSE, JEE Main, and NEET
- CBSE Boards: foundational and middle formulas cover 95% of board questions.
- JEE Main: full table plus 2-3 appendix extensions are essential.
- NEET: foundational rows plus dimensional reasoning and careful unit checks.
Don't / Do for Lenz's law and induced-current direction.
Other Resources for Electromagnetic Induction: Class 12 Physics Chapter 6
| Resource | Link |
|---|---|
| NCERT Solutions | Electromagnetic Induction Solutions |
| NCERT Notes | Electromagnetic Induction Notes |
| Handwritten Notes | Electromagnetic Induction Handwritten Notes |
| Formula Sheet | Electromagnetic Induction Formula Sheet |
| NCERT Book PDF | Electromagnetic Induction NCERT Book PDF |
| Exemplar Solutions | Electromagnetic Induction Exemplar Solutions |
| Exemplar Book PDF | Electromagnetic Induction Exemplar Book PDF |
NCERT Formula Sheets for Class 12 Physics: All Chapters
| Chapter | Resource |
|---|---|
| Chapter 1 | Electric Charges and Fields Formula Sheet |
| Chapter 2 | Electrostatic Potential and Capacitance Formula Sheet |
| Chapter 3 | Current Electricity Formula Sheet |
| Chapter 4 | Moving Charges and Magnetism Formula Sheet |
| Chapter 5 | Magnetism and Matter Formula Sheet |
| Chapter 6 | Electromagnetic Induction Formula Sheet |
| Chapter 7 | Alternating Current Formula Sheet |
| Chapter 8 | Electromagnetic Waves Formula Sheet |
| Chapter 9 | Ray Optics and Optical Instruments Formula Sheet |
| Chapter 10 | Wave Optics Formula Sheet |
| Chapter 11 | Dual Nature of Radiation and Matter Formula Sheet |
| Chapter 12 | Atoms Formula Sheet |
| Chapter 13 | Nuclei Formula Sheet |
| Chapter 14 | Semiconductor Electronics Formula Sheet |
Class 12 Physics Chapter 6 Electromagnetic Induction Formula Sheet FAQs
Ques. How many formulas are in the Class 12 Chapter 6 Physics formula sheet?
Ans. 8 formulas cover every numerical the chapter generates. The Quick-Reference Table above lists them with units. The PDF has the same list on a single A4 cover sheet for night-before revision.
Ques. What is the weightage of Class 12 Physics Chapter 6?
Ans. Chapter 6 carries 5 marks in CBSE Class 12 Physics, 3 to 4 percent in JEE Main, and 1 to 2 questions per year in NEET. The formula sheet covers the formulas needed for every variant.
Ques. Where can I download the Class 12 Chapter 6 Physics formula sheet PDF?
Ans. The PDF is available directly on this page via the flipbook above. You can also use the download button to get the full PDF file.
Ques. Are the JEE Main extensions covered in this formula sheet?
Ans. Yes. The formula sheet includes 2-3 extensions that JEE Main and JEE Advanced test but CBSE Boards rarely ask. These are flagged with a distinct marker in the PDF.
Ques. What is the most-asked formula in Electromagnetic Induction?
Ans. Magnetic flux is the foundational formula and appears in most Chapter 6 numericals. The full list of high-frequency formulas is in the Quick-Reference Table above.
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