Electromagnetic Waves — Class 12 CBSE Physics revision notes
A 3-page visual revision sheet for Electromagnetic Waves, written for Class 12 CBSE Physics. Formulas, diagrams and the traps that cost marks, laid out to be read the night before rather than the term before. Free, and it opens inside CapCompass.
What this Electromagnetic Waves sheet covers
- Changing E
- Displacement current
- Self-sustaining wave
- Displacement current, said precisely
- What an electromagnetic wave is
- Speed and the relation between E and B
- speed in vacuum
- numerically
- amplitudes are locked together
- frequency and wavelength
- Energy in the wave
- Wavelength and frequency move opposite ways
- fixed relation, c stays constant
- The electromagnetic spectrum, low to high frequency
- Where each band is used
- Symbols
- Traps that cost marks
- Tricks that save time
How CapCompass uses this sheet
These notes are not a standalone PDF. CapCompass plans Physics chapter by chapter against your real exam dates and free hours, and when the plan reaches Electromagnetic Waves the sheet opens inside the study block itself — at the page covering the sub-topic that block is on, with the timer still running. Revision arrives at the moment the plan says revise, instead of having to be gone looking for.