As per the JEE-Main chapter weightage, the Magnetic Field chapter accounts for around 6–7% weightage of the Physics section in the JEE Mains. In the January and April sessions of JEE Mains 2025, approximately 12 questions were asked from Magnetic Fields and Magnetism across all shifts.
- 2-3 questions are consistently asked every year from the Magnetic Field chapter across different shifts.
- Approximately 60-70% of the questions are conceptual, while the rest are formula-based and application-based, covering topics such as torque on dipoles and force calculations.
Read More:
- JEE Main 2026 syllabus with chapter-wise weightage & deleted topics (PDF)
- Check the section-wise weightage for JEE Mains 2026
Why Ignoring the Magnetic Field Chapter can Cost you Big in JEE Main Physics?
Neha and Saurav, two engineering aspirants, started their JEE Mains Physics preparation with different strategies. Neha, a mediocre student, prepared the chapters based on previous years’ questions. She observed that questions from Biot-Savart Law, Magnetic Effects of Current, and properties of Magnetic Fields were consistently being asked in the JEE Mains exam.
On the other hand, Saurav, who was a very good student, read all the chapters and even practiced questions from the chapters that interested him. However, during his final revision, he skipped the Magnetic Field section due to a lack of practice.
On the exam day, when he saw three consecutive questions from the section he had ignored, he went blank; one question from the path of a charged particle in a magnetic field, one was numerical, and the last was from magnetic force.
On the result day, Saurav somehow managed to secure 52 marks, while Neha, who treated all chapters equally, got 75 marks in Physics. This made Saurav realise the Magnetic Field weightage in the JEE Mains exam, as neglecting this section cost him around 12–16 marks.
Read More: Is it possible to score 80+ in Physics in the JEE Mains exam in just one month?
Most Important Magnetic Field Topics for JEE Main 2026
- The topics that must be covered in the Magnetic Fields chapter include Biot-Savart's law and its applications, Ampere's circuital law, determining the path of a moving charged particle and the force acting on it, etc.
- The topic-wise weightage in all shifts of the JEE Main exam varies every year, ranging from 5% to 25%.
Read Also: Attempt questions on Electric and Magnetic Field for JEE Main
Ques: Can the Magnetic Field chapter be combined with other chapters in Physics?
Ans: Yes. The Magnetic Field chapter, when combined with chapters like Electromagnetic Induction and Electromagnetism, can contribute to around 15-20% of the total weightage of the Physics section in the exam.
Magnetic Field Weightage Trend: Last 5 Years Analysis
The last five years (2021–2025) data show Magnetic Field weightage in the JEE Mains exam has been maintained at 6–7% of the total physics section.
| Year | Approx. Questions | % of Physics |
|---|---|---|
| 2021 | 2-3 | 6-7 |
| 2022 | 2-3 | 6-7 |
| 2023 | 2-4 | 6-10 |
| 2024 | 2-3 | 6-7 |
| 2025 | 2-3 | 6-7 |
| Year | Question Paper PDF | Solution PDF |
|---|---|---|
| 2024 | Download | Download |
| 2023 | Download | Download |
| 2022 | Download | Download |
| 2021 | Download | Download |
| 2020 | Download | Download |
Ques: What type of questions were asked in the JEE Mains 2025 from the Magnetic Field chapter of Physics?
Ans: Last year, all sessions featured a mix of question types, including:
- Multiple-choice questions: Path/radius of a charged particle, force, and torque on a dipole
- Numerical problems: Calculation of the magnetic field at the centre/pole/axis
- Conceptual questions: Ampere's law, Biot-Savart law, applications
Reddit & Student Insights: What Aspirants Say About Magnetic Field
On Reddit, a student posted about the weightage of magnetic fields in the JEE Mains exam, saying:
- “Worth the time....base for emi and its high weightage....not that hard actually....mainly a few repeated types of numericals like the proton, neutron, and alpha particle type....and loop qs.”
Source: Reddit
Another user posted,
- In the JEE Mains exam, the weightage of magnetic fields, when combined with electromagnetism (core) and electromagnetic induction, is approximately 15% of the total physics section.
Source: Quora
| Magnetic Field JEE Main PYQ - 1 Mock Test | Magnetic Field JEE Main PYQ - 2 Mock Test | Magnetic Field JEE Main PYQ - 3 Mock Test |
How to Prepare Magnetic Field for JEE Main 2026 (Expert Strategy)
| Aspect | Details |
|---|---|
| Concept clarity first (NCERT reference) | Thoroughly read NCERT Class 12 Physics Chapters 4 (Magnetic Effects of Current & 5 (Magnetism and Matter) |
| Formula &constants list | Memorize key formulas: Biot-Savart (dB = μ₀/4π × Idl sinθ/r²), Ampere (∮B⋅dl = μ₀I), Force (F = q(v×B) or ILB sinθ), Torque (τ = m×B), μ₀ = 4π×10⁻⁷ Tm/A |
| PYQs (minimum years to attempt) | Last 10-15 years (focus on 2020-2025 trends) |
| Chapter-wise MCQs target (number) | 200-300 (including variations from coaching modules) |
| Last week's revision approach | Quick formula sheet review + 50 high-yield PYQS + diagram-based problems (field lines, hand rules) |
Read More: Check the best books for Physics, Chemistry, and Maths for JEE Mains 2026 exam
Ques: What will happen if I skip the Magnetic Fields chapter? Will it affect other chapters?
Ans: Skipping the Magnetic Fields chapter while preparing for JEE Mains 2026 could be a big mistake. The importance of a chapter can be understood from several factors, such as:
- Interconnection with other chapters: In chapters like Electromagnetism and Electromagnetic Induction, you will find the formulas and theories of magnetic fields interconnected.
- Impact on performance: Questions from this section are mostly predictable and based on previous years' question paper patterns. Skipping it could unnecessarily cost you 2-3 questions or 8-12 marks.
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