Class 12 Physics Practice Paper Chapter 4 Moving Charges and Magnetism (Free PDF)

Class 12 Physics Practice Paper Chapter 4 Moving Charges and Magnetism [Free PDF]

Introduction

Welcome to Bhautik Study, your trusted platform for Physics learning and exam preparation. Physics at the Class 12 level provides students with a strong foundation in understanding the physical laws that govern the universe. Among all chapters, Chapter 4 – Moving Charges and Magnetism is one of the most interesting as well as scoring topics. This chapter connects the study of electricity with magnetism and helps students explore how charges in motion create magnetic effects. It is a crucial part of the Electromagnetism unit, which carries significant weight in CBSE Class 12 Board Exams, JEE, and NEET.

A strong understanding of this chapter is crucial for success in CBSE Board Exams, JEE Main, JEE Advanced, and NEET. To help students, we at Bhautik Study have prepared a free practice paper PDF for Chapter 4. It includes theoretical, numerical, and competitive-level multiple-choice questions to strengthen your concepts.

The central theme of this chapter is the magnetic field produced by a current-carrying conductor and the various effects of such magnetic fields. From Biot-Savart’s Law to Ampere’s Circuital Law, students learn the fundamental principles that form the backbone of modern-day electrical engineering and technology. This is the chapter where the relationship between electric current and magnetism becomes clear, preparing students for advanced concepts like electromagnetic induction in later chapters.

At Bhautik Study, we understand that practice is the key to mastering Physics. That’s why we are offering a free practice paper PDF for Class 12 Physics Chapter 4 – Moving Charges and Magnetism. This PDF has been carefully designed by subject experts to cover NCERT syllabus questions, previous year exam problems, and advanced numerical challenges for JEE/NEET aspirants.

📖 Preview – Class 12 Physics Chapter 4 Practice Paper

Before downloading, you can preview the first few pages of the practice paper below. This helps you get an idea of the type and level of questions included in the PDF.

👉 For the full paper, Download the Complete PDF Here.

📥 Download Section

Get the Class 12 Physics Chapter 4 – Moving Charges and Magnetism (Medium Level) practice paper prepared by Bhautik Study. This PDF is designed to strengthen your concepts and prepare you for Board Exams, JEE, and NEET.

File Size: 1.2 MB | Format: PDF | Chapter: 4 | Level: Medium

Importance of Chapter 4 – Moving Charges and Magnetism

  • Explains how moving charges generate magnetic fields and how magnetic fields affect charges and conductors.

  • Covers key concepts like Biot-Savart’s Law, Ampere’s Law, Lorentz Force, and Force between Conductors.

  • Highly relevant for CBSE Board Exams (4–6 marks) and competitive exams (JEE, NEET) with both theory and numericals.

  • Builds the foundation for advanced topics like Electromagnetic Induction and Alternating Current.

  • Involves application-based numerical problems, improving problem-solving skills.

  • Practical applications include the working of electric motors, particle accelerators, and generators.

  • A scoring chapter with balanced weightage of theory and numerical problems.

  • Strengthening this chapter is essential for mastering the electromagnetism portion of Class 12 Physics.

Why Practice Chapter 4 – Moving Charges and Magnetism Thoroughly?

Short answer: because this chapter bridges electrostatics and magnetism, introducing concepts that are heavily tested in both boards and competitive exams. It combines theory, numericals, and applications, making practice essential for accuracy and speed.

Key benefits of thorough practice

  • Foundation of electromagnetism — Ampere’s law, Biot–Savart law, and motion of charges in magnetic fields are essential for later chapters like EMI, AC, and Electromagnetic Waves.

  • Strengthens numerical problem-solving — many 3–5 mark questions involve field calculations around wires, solenoids, or circular loops.

  • Improves application-based reasoning — Lorentz force, cyclotron, and force between conductors test conceptual depth and mathematical handling.

  • Boosts exam confidence — standard derivations (like force on a current-carrying conductor, motion in magnetic fields) appear frequently in boards.

  • Enhances JEE/NEET readiness — tricky multiple-choice questions often mix electric and magnetic concepts; practising builds strong problem recognition skills.

What to focus on while practising

  1. Biot–Savart Law — derive and apply for circular loop, straight conductor.

  2. Ampere’s Circuital Law — solenoid, toroid, and infinite straight wire field calculations.

  3. Lorentz Force — motion of charged particle in uniform B-field, helical path.

  4. Force between parallel conductors — definition of Ampere.

  5. Conceptual clarity — right-hand rule, vector directions, field inside vs outside conductors.

Common pitfalls (avoid these)

  • Confusing direction of magnetic field (wrong-hand rule usage).

  • Forgetting that magnetic force does no work on a moving charge.

  • Misapplying Ampere’s law in non-symmetric cases.

  • Errors in radius/period formulas for charged particle motion.

  • Mixing up between electric and magnetic effects on charges.

Detailed Syllabus Breakdown – Chapter 4: Moving Charges and Magnetism

  • Introduction to Magnetism from Moving Charges

    • Concept of magnetic field due to current

    • Oersted’s experiment and its significance

  • Biot–Savart Law

    • Statement and mathematical expression

    • Applications:

      • Magnetic field at the center of a circular current-carrying loop

      • Field on the axis of a current loop

  • Ampere’s Circuital Law

    • Statement and derivation

    • Applications:

      • Field due to infinitely long straight conductor

      • Field inside a solenoid

      • Field inside a toroid

  • Force on a Moving Charge in a Magnetic Field

    • Lorentz force

    • Motion of charged particles in uniform magnetic field (circular & helical paths)

    • Cyclotron principle and working

  • Force on a Current-Carrying Conductor in a Magnetic Field

    • Derivation and examples

    • Force between two parallel conductors (definition of Ampere)

  • Torque on a Current Loop in a Magnetic Field

    • Derivation of torque expression

    • Concept of magnetic dipole moment of a current loop

    • Analogy with electric dipole

  • Magnetic Field due to a Current-Carrying Wire & Loop

    • Long straight wire

    • Circular loop

    • Solenoid and toroid (field inside & outside)

Highlights of the PDF

✔ NCERT-based questions with detailed coverage
✔ Derivations and formula-based numerical problems
✔ Includes previous year CBSE + JEE/NEET questions
✔ Combination of MCQs, short answer, and long answer type questions
✔ Free to download and practice at home

📌 How to Use This Practice Paper

  1. Revise NCERT examples and theory before solving.

  2. Attempt questions in a time-bound manner (simulate exam).

  3. Focus on derivations and formula-based problems.

  4. Identify weak areas and revise with NCERT and your notes.

Important Class 12 Physics Practice Paper Chapter 4 Moving Charges and Magnetism [Free PDF]
Class 12 Physics Moving Charges and Magnetism Practice Paper
Class 12 Physics Chapter 4 – Moving Charges and Magnetism Practice Paper

Welcome to Bhautik Study’s Class 12 Physics Practice Paper series. Here you can download free practice papers for Chapter 4 – Moving Charges and Magnetism to strengthen your preparation for CBSE, JEE, and NEET exams.

📌 Explore More Practice Papers:

📥 Download PDF: Class 12 Physics Chapter 4 Practice Paper

Frequently Asked Questions (FAQs)

Q1: What is covered in Class 12 Physics Chapter 4 – Moving Charges and Magnetism?

It covers the Biot-Savart law, Ampere’s circuital law, magnetic force on a moving charge, motion in a magnetic field, force on a current-carrying conductor, torque on current loops, and applications like cyclotron.

Q2: How do these practice papers help in CBSE board exam preparation?

These practice papers include a mix of derivations, numerical problems, and conceptual questions based on the latest NCERT syllabus, ensuring complete exam readiness.

Q3: Are these papers useful for JEE and NEET?

Yes, Chapter 4 is highly important for JEE and NEET as it includes application-based numerical problems that are frequently asked in competitive exams.

Q4: Is there any cost for downloading these papers?

No, all practice papers on Bhautik Study are completely free to download and use for exam preparation.