Chapter 25 of 32
Concept Maps
Electromagnetic Waves — Concept Maps
ICSE · Class 12 · Physics
4 concept maps of Electromagnetic Waves for ICSE Class 12 Physics, each also written out as a text outline. Part of the ICSE Class 12 Physics syllabus.
68 questions34 flashcards16 formulas & key relations5 concepts
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4 Concept Maps
Electromagnetic Waves — Complete Chapter Overview
The map in words
- Electromagnetic Waves
- Displacement Current
- Inconsistency in Amperes Law
- Id = e0 x dPhiE by dt
- Id equals Ic during charging
- Ampere-Maxwell Law
- Maxwells Equations
- Gauss Law for Electricity
- Gauss Law for Magnetism
- Faradays Law
- Ampere-Maxwell Law
- EM Wave Properties
- Transverse Nature
- E perpendicular to B
- Both perpendicular to k
- Speed in Vacuum
- c = 1 by root mu0 e0
- 3 x 10^8 m per s
- E by B = c
- Produced by Accelerated Charges
- No Medium Required
- Transverse Nature
- Energy in EM Waves
- Energy Density u
- Electric ue = half e0 E2
- Magnetic um = B2 by 2mu0
- ue equals um
- Intensity I
- I = half e0 E0^2 c
- Radiation Pressure
- Energy Density u
- EM Spectrum
- Radio Waves
- Communication
- Microwaves
- Radar and Ovens
- Infrared
- Heat Rays
- Visible Light
- 4e-7 to 7e-7 m
- Ultraviolet
- Sterilisation
- X-Rays
- Medical Imaging
- Gamma Rays
- Radiotherapy
- Radio Waves
- Displacement Current
Common Misconceptions in Electromagnetic Waves - Topic Map
The map in words
- root（（EM Waves
- Misconceptions））
- Displacement Current
- Not actual charge flow
- Zero when capacitor fully charged
- Equal to conduction current
- Wave Properties
- No medium needed
- Transverse not longitudinal
- E vector is light vector
- Speed and Spectrum
- Same speed in vacuum
- Higher epsilon means lower speed
- Spectrum order fixed
- Energy
- Average uses half of peak squared
- E and B carry equal energy
- Intensity formula
- Production
- Only accelerated charges radiate
- Not static or uniform motion
- Displacement Current
Electromagnetic Waves — Complete Concept Map
The map in words
- Electromagnetic Waves
- Displacement Current
- Formula Id = e0 x dPhiE by dt
- Id equals Ic during charging
- Resolves Ampere inconsistency
- Exists between capacitor plates
- Maxwells Equations
- Gauss Law Electricity
- Gauss Law Magnetism
- Faradays Law
- Ampere Maxwell Law
- EM Wave Properties
- Transverse Nature
- E perpendicular to B
- Both perpendicular to propagation
- Speed in Vacuum
- c = 3 x 10^8 m per s
- c = 1 by root mu0 epsilon0
- E0 by B0 = c
- E and B in phase
- Produced by accelerated charges
- Transverse Nature
- Energy in EM Waves
- Energy Density
- Electric ue = half e0 E squared
- Magnetic um = B squared by 2mu0
- ue equals um on average
- Intensity
- I = half e0 E0 squared c
- I = P by 4 pi r squared
- Radiation Pressure
- Absorber P = I by c
- Reflector P = 2I by c
- Energy Density
- EM Spectrum
- Gamma Rays
- Nuclear origin
- Smallest wavelength
- X Rays
- Fast electron deceleration
- Medical imaging
- UV Rays
- Absorbed by ozone
- Visible Light
- 400 nm to 700 nm
- Infrared Heat Rays
- Hot bodies
- Microwaves
- RADAR and ovens
- Radio Waves
- Oscillating circuits
- Largest wavelength
- Gamma Rays
- Displacement Current
Electromagnetic Waves
The map in words
- Electromagnetic Waves
- Displacement Current
- Ampere-Maxwell Circuital Law
- Maxwell’s Equations
- Electromagnetic Wave Nature
- Speed and Field Relation
- Energy and Intensity
- Electromagnetic Spectrum
- Visible Spectrum and Light
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Explore DiagramsFrequently Asked Questions
What are the important topics in Electromagnetic Waves for ICSE Class 12 Physics?
Key topics in Electromagnetic Waves include Displacement Current and Ampere-Maxwell Law, Maxwell's Equations, Electromagnetic Waves: Nature and Properties, Electromagnetic Spectrum. Study these first, then practise questions on each for the ICSE Class 12 board exam.
What do the concept maps for Electromagnetic Waves show?
The 4 maps show how the ideas in Electromagnetic Waves connect: Electromagnetic Waves — Complete Chapter Overview; Common Misconceptions in Electromagnetic Waves - Topic Map. Each map is also written out as an outline on this page.
How should I revise Electromagnetic Waves for the ICSE Class 12 board exam?
Learn the core ideas first, then work through the 68 practice questions on Electromagnetic Waves. 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.
More resources for Electromagnetic Waves
Practice Quiz
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Important Questions
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Revision Notes
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Formula Sheet
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Chapter Summary
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Study Plan
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Flashcards
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Syllabus
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