Skip to main content
Super TutorResources
Chapter 19 of 32
QuestionsNotesFlashcardsSummaryFormulasQuizConceptsSyllabusPlan
Syllabus

Magnetic Classification of Substances

ICSE · Class 12 · Physics

Complete topic list for Magnetic Classification of Substances in ICSE Class 12 Physics. Key concepts, sub-topics, and what to focus on for board exams.

44 questions28 flashcards5 concepts

Interactive on Super Tutor

Studying Magnetic Classification of Substances? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for syllabus and more.

Try Super Tutor — Free

1,000+ Class 12 students started this chapter today

4 Topics · ICSE Class 12 Physics

Topics in Magnetic Classification of Substances

1

1. Classification of Magnetic Substances

  • All substances, including solids, liquids, and gases, fall into diamagnetic, paramagnetic, or ferromagnetic classes.
  • Every substance is fundamentally diamagnetic, but in paramagnetic and ferromagnetic substances this property is masked by the stronger magnetic effect.
  • Diamagnetic substances are feebly magnetised opposite to the magnetising field and are repelled by a magnet.
2

2. Magnetic Induction, Magnetisation, and Magnetic Intensity

  • Magnetic induction B is the magnetic flux density inside a magnetised substance.
  • SI unit of B is tesla; CGS unit is gauss, and 1 G = 10^-4 T.
  • Magnetisation M is the magnetic moment per unit volume of a magnetised substance.
3

3. Properties of Dia-, Para-, and Ferromagnetic Substances

  • A freely suspended diamagnetic rod sets itself perpendicular to the magnetic field.
  • A freely suspended paramagnetic rod sets itself parallel to the magnetic field.
  • A diamagnetic substance moves from stronger to weaker regions of a non-uniform magnetic field.
4

4. Atomic Explanation of Magnetism

  • Electron spin is the main source of atomic magnetic moment; orbital motion contributes very little.
  • Diamagnetic substances generally have atoms, ions, or molecules with paired electrons and zero net magnetic moment.
  • When a diamagnetic substance is placed in a field, the induced moment is opposite to the field because of the Lenz-law effect.

Key Concepts

Central concept: Magnetic behaviour of substances and their classification into diamagnetic, paramagnetic, ferromagnetic, and specific diamagnetic superconductors

Magnetic classificationDiamagnetic substancesParamagnetic substancesFerromagnetic substancesSuperconductorsMagnetic induction BMagnetisation MMagnetic intensity H

Frequently Asked Questions

What are the important topics in Magnetic Classification of Substances for ICSE Class 12 Physics?
Key topics in Magnetic Classification of Substances include Magnetic Classification of Substances - Concept Overview, Mind map showing the three main classifications of magnetic substances and their key characteristics with examples, Flowchart showing the mechanism of diamagnetism from atomic structure to macroscopic repulsion. These are the concepts ICSE Class 12 examiners draw on most — study them first, then practise related questions.
How to score full marks in Magnetic Classification of Substances — ICSE Class 12 Physics?
Understand the core concepts first, then work through the 44 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Magnetic Classification of Substances

All 32 chapters — ICSE Class 12 Physics Syllabus

For serious students

Get the full Magnetic Classification of Substances chapter — for free.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for ICSE Class 12 Physics.

Try Super Tutor Free
Try the full chapter — Free