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Chapter 5 of 10
Concept Maps

Magnetism And Electromagnetism — Concept Maps

Tamil Nadu Board · Class 9 · Science

3 concept maps of Magnetism And Electromagnetism for Tamil Nadu Board Class 9 Science, each also written out as a text outline.

42 questions25 flashcards5 concepts

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A diagram showing the setup of Oersted's experiment with a straight copper wire, a battery, a key, and a compass needle placed near the wire, illustrating the deflection of the compass when current fl
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3 Concept Maps

Magnetism and Electromagnetism – Chapter Overview Mind Map

Magnetism and Electromagnetism – Chapter Overview Mind Map

The map in words

  • Magnetism and Electromagnetism
    • Magnetic Field
      • Symbol B
      • Unit Tesla
      • Region around magnet
      • Earth has magnetic field
    • Magnetic Field Lines
      • N pole to S pole
      • Never intersect
      • Closed continuous loops
      • Tangent gives direction
      • Flux unit is Weber
    • Magnetic Effect of Current
      • Oersted 1820
      • Current produces B field
      • Perpendicular to current
      • Right Hand Thumb Rule
    • Force on Conductor
      • Formula F equals BIL
      • Lorentz Force
      • Flemings Left Hand Rule
      • Motor Rule
    • Parallel Conductors
      • Same direction Attract
      • Opposite direction Repel
    • Electric Motor
      • Electrical to Mechanical
      • Split Ring Commutator
      • Left Hand Rule
      • Armature coil
    • Electromagnetic Induction
      • Faraday 1831
      • Change in flux induces EMF
      • Three Experiments
      • Lenz Law
      • Right Hand Rule
    • Electric Generator
      • Mechanical to Electrical
      • Slip Rings for AC
      • Split Ring for DC
      • Right Hand Rule
    • Transformer
      • AC only
      • Step Up Ns greater Np
      • Step Down Ns less Np
      • Formula Np over Ns equals Vp over Vs
    • Applications
      • Electric Speaker
      • Maglev Trains
      • MRI Scanner
      • Electric Bell

Magnetism and Electromagnetism - Concept Overview

Magnetism and Electromagnetism - Concept Overview

The map in words

  • Magnetism and Electromagnetism
    • Magnetic Fields
      • Magnetic field concept
      • Magnetic field lines
      • Properties of field lines
      • Magnetic flux
      • Flux density
    • Magnetic Effect of Current
      • Oersted experiment
      • Right hand thumb rule
      • Magnetic field around wire
      • Force on conductors
    • Current and Magnets
      • Force on current conductor
      • Fleming left hand rule
      • Parallel current conductors
      • Attraction and repulsion
    • Electric Motor
      • Working principle
      • Rotating coil
      • Split ring commutator
      • Speed control factors
    • Electromagnetic Induction
      • Faraday experiments
      • Induced EMF
      • Lenz law
      • Fleming right hand rule
    • Generators
      • AC generator
      • DC generator
      • Slip rings vs commutator
      • Induced current
    • Transformers
      • Working principle
      • Step up transformer
      • Step down transformer
      • Voltage and current relationship
      • Power transmission
    • Applications
      • Speakers
      • Maglev trains
      • MRI machines
      • Electromagnets

Magnetism and Electromagnetism - Concept Overview

Magnetism and Electromagnetism - Concept Overview

The map in words

  • Magnetism and Electromagnetism
    • Magnetic Concepts
      • Magnetic Field B
        • Direction
        • Properties
      • Field Lines
        • Start North Pole
        • End South Pole
        • Never intersect
      • Magnetic Flux
        • Flux density
        • Weber units
    • Current and Magnetism
      • Oersted Discovery
        • Current produces field
        • Right hand rule
      • Parallel Conductors
        • Same direction attract
        • Opposite direction repel
      • Force on Conductor
        • F equals ILB
        • Fleming left rule
    • Electromagnetic Devices
      • Motors
        • Convert electrical
        • Coil rotation
      • Generators
        • AC and DC types
        • Electromagnetic induction
      • Transformers
        • Step up voltage
        • Step down voltage
    • Practical Applications
      • Industrial
        • Electromagnets
        • Maglev trains
      • Medical
        • MRI machines
        • Diagnostic tools
      • Household
        • Speakers
        • Electric motors
        • Doorbells

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Frequently Asked Questions

What are the important topics in Magnetism And Electromagnetism for Tamil Nadu Board Class 9 Science?
Key topics in Magnetism And Electromagnetism include Magnetic Field and Magnetic Field Lines, Magnetic Effect of Current – Oersted's Discovery, Force on a Current-Carrying Conductor in a Magnetic Field, Force Between Two Parallel Current-Carrying Conductors. Study these first, then practise questions on each for Class 9 exams.
What do the concept maps for Magnetism And Electromagnetism show?
The 3 maps show how the ideas in Magnetism And Electromagnetism connect: Magnetism and Electromagnetism – Chapter Overview Mind Map; Magnetism and Electromagnetism - Concept Overview. Each map is also written out as an outline on this page.
How should I revise Magnetism And Electromagnetism for Class 9 exams?
Learn the core ideas first, then work through the 42 practice questions on Magnetism And Electromagnetism. Revise 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.

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