CBSE Class 12 Physics Question Bank: Master EMI and Faraday’s Law 2026
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CBSE Class 12 Physics Question Bank: Ultimate Guide to Electromagnetic Induction (EMI) 2026
Success in the CBSE Class 12 Physics Question Bank for 2026 requires more than just memorizing definitions; it demands a deep understanding of how changing magnetic fields create electricity. Electromagnetic Induction (EMI), specifically Faraday’s Law, is a cornerstone of the curriculum, accounting for a significant portion of Unit IV. As the 2026 board exams approach, the focus has shifted toward competency-based questions that bridge the gap between theoretical physics and real-world medical and industrial applications.
In this comprehensive guide, we analyze the latest trends, provide a curated CBSE Class 12 Physics Question Bank, and highlight the most repeated questions to ensure you score 100% in this chapter.
Chapter Overview: Why Faraday’s Law Matters in 2026
Faraday’s Law of Electromagnetic Induction is the principle behind the generators that power our cities and the medical devices that save lives. For the 2026 academic year, the CBSE has emphasized "Application in Health Science." This means students are expected to know not just the law, but how it facilitates technologies like MRI (Magnetic Resonance Imaging) and Transcranial Magnetic Stimulation (TMS).
Unit IV Weightage Analysis
Unit | Chapter | Marks Weightage (Approx) |
Unit IV: EMI & AC | Chapter 6: Electromagnetic Induction | 4–6 Marks |
Total Unit IV | EMI + Alternating Current | 17 Marks |
Important Formulas to Master
While numerical values change, the logic remains constant. In your CBSE Class 12 Physics Question Bank preparation, ensure you can derive and apply the following:
Magnetic Flux Formula
Faraday’s Law of Induction (Induced EMF)
Lenz’s Law (Direction of Induced Current)
Motional EMF in a Conducting Rod
Coefficient of Self-Induction
Coefficient of Mutual Induction
Energy Stored in an Inductor
Top Important Questions for CBSE Class 12 Physics 2026
Based on an analysis of the last 10 years of previous papers and the 2026 sample curriculum, here are the high-probability questions:
Short Answer Questions (2 Marks)
Define Magnetic Flux: State its SI unit and dimensional formula.
Lenz’s Law & Energy Conservation: Explain how Lenz’s Law is a consequence of the law of conservation of energy.
Eddy Currents: What are eddy currents? Mention two ways to minimize them in a transformer core.
Self vs. Mutual Induction: Distinguish between self-induction and mutual induction with one example each.
Long Answer & Derivations (3–5 Marks)
Motional EMF: Derive the expression for the EMF induced in a straight conductor moving in a uniform magnetic field.
Mutual Inductance of Two Long Solenoids: Prove that M_{12} = M_{21} for two coaxially wound solenoids.
The AC Generator: Describe the principle, construction, and working of an AC generator with a labeled diagram.
Medical Application Case Study: Explain the role of electromagnetic induction in the functioning of an MRI machine. How does a varying magnetic field interact with human tissue?
Medical Applications: The 2026 Edge
The CBSE Class 12 Physics Question Bank now includes interdisciplinary questions. In medicine, Faraday's Law is vital:
MRI Machines: Use massive superconducting magnets and gradient coils. The changing magnetic fields induce signals in the body’s hydrogen nuclei, which are then processed into images.
Pacemakers: Modern wireless charging for medical implants often uses mutual induction to transfer power through the skin without invasive wires.
Expert Preparation Tips for 2026
Focus on Diagrams: In EMI, a neat diagram of a coil-magnet experiment or an AC generator can fetch you full marks even if the theory is brief.
Lenz’s Law Direction: Practice the "Right-Hand Palm Rule" or "Fleming’s Right-Hand Rule" to determine the direction of induced current—this is a frequent 1-mark MCQ trap.
Conceptual Clarity: Understand that EMF is induced only when there is a change in flux. A stationary magnet inside a coil produces zero EMF.
Quick Resource Links
CBSE Official Academic Portal: cbseacademic.nic.in
Official Link : https://www.cbse.gov.in/cbsenew/question_bank.html
CBSE Academic Question Bank: Official CBSE Class 12 Materials
Conclusion
Mastering the CBSE Class 12 Physics Question Bank for Electromagnetic Induction is a stepping stone to excelling in the entire Physics paper. By focusing on Faraday’s Law, Lenz’s Law, and their modern medical applications, you align your preparation with the latest 2026 educational standards. Consistency in practicing derivations and solving previous year questions will ensure you remain ahead of the curve.
Frequently Asked Questions (FAQs)
Q1: What is the most important topic in the CBSE Class 12 Physics Question Bank for Chapter 6?
Ans: Faraday’s Law and Lenz’s Law are the most critical. Most years, a derivation of Motional EMF or a numerical on Mutual Induction is guaranteed.
Q2: Will the 2026 exam have more numericals or theory?
Ans: The 2026 trend suggests a 60-40 split favoring conceptual theory and competency-based case studies. However, the CBSE Class 12 Physics Question Bank always includes at least one numerical on flux change.
Q3: How do I access official question banks?
Ans: You should refer to the SCERT Maharashtra and MSBSHSE portals for regional insights, or the official CBSE academic website for the national standard question banks.
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