CBSE 12 Physics Part 1 | 6. ELECTROMAGNETIC INDUCTION by Pavan | Learn Smarter
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6. ELECTROMAGNETIC INDUCTION

Electromagnetic induction establishes the fundamental relationship between electricity and magnetism, as demonstrated by the experiments of Faraday and Henry. The chapter provides a detailed explanation of Faraday's laws of induction, the concept of magnetic flux, and the significance of inductance in electrical circuits, highlighting applications such as AC generators. The phenomenon not only serves theoretical interests but also plays a crucial role in modern technology, including the production of electric power.

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Sections

  • 6

    Electromagnetic Induction

    This section explores the phenomenon of electromagnetic induction, emphasizing its historical significance and practical applications, particularly through the experiments of Michael Faraday and Joseph Henry.

    Learning Practice

  • 6.1

    Introduction

    This section discusses the historical perspective and foundational concepts of electromagnetic induction, focusing on the relationship between electricity and magnetism.

    Learning Practice

  • 6.2

    The Experiments Of Faraday And Henry

    This section discusses the groundbreaking experiments of Michael Faraday and Joseph Henry that demonstrated how changing magnetic fields can induce electric currents.

    Learning Practice

  • 6.3

    Magnetic Flux

    This section introduces the concept of magnetic flux, defining it mathematically and explaining its significance in electromagnetic induction.

    Learning Practice

  • 6.4

    Faraday's Law Of Induction

    Faraday's Law states that an electromotive force (emf) is induced in a coil when the magnetic flux through it changes over time.

    Learning Practice

  • 6.5

    Lenz's Law And Conservation Of Energy

    Lenz's Law describes how induced currents oppose the change in magnetic flux that causes them, illustrating the principle of conservation of energy.

    Learning Practice

  • 6.6

    Motional Electromotive Force

    Motional electromotive force (emf) describes the induced emf experienced by a conductor moving through a magnetic field, depending on the velocity, the magnetic field strength, and the length of the conductor.

    Learning Practice

  • 6.7

    Inductance

    Inductance describes the ability of a coil to induce an emf in itself or in another nearby coil due to changes in current.

    Learning Practice

  • 6.7.1

    Mutual Inductance

    This section discusses the concept of mutual inductance, explaining how a current in one coil can induce an electromotive force (emf) in a nearby coil.

    Learning Practice

  • 6.7.2

    Self-Inductance

    Self-inductance refers to the phenomenon where an electromotive force (emf) is induced in a coil due to a change in current flowing through the same coil.

    Learning Practice

  • 6.8

    Ac Generator

    The AC generator converts mechanical energy into electrical energy via electromagnetic induction.

    Learning Practice

  • 6.9

    Summary

    This section provides an overview of key concepts related to magnetic flux, Faraday's law, Lenz's law, self-inductance, and mutual inductance with real-world applications.

    Learning Practice

References

NCERT Study Material

Class Notes

Memorization

What we have learnt

  • Electromagnetic induction i...
  • Lenz's law states that the ...
  • Inductance quantifies the a...

Final Test

Revision Tests