Class 12 Physics Electromagnetic Waves Electromagnetic Waves

What are Electromagnetic Waves?

  • Electromagnetic (EM) waves are the waves which are related toboth electricity and magnetism.
  • Electromagnetic (EM) waves are the waves which are coupled time varying electric and magnetic fields that propagate in space.
  • Waves associated with electricity and magnetism and as they are waves so they willpropagate in the space.
  • When the electric and magnetic fieldscombinetogether and whenthey are varying with time they both will give rise to electromagnetic waves.
  • Electromagnetic equations emerged from Maxwell’s equations.
  • Maxwell found these EM waves have so many special properties which can be used for many practical purposes.
  • Time varying electric field + Time varying magnetic field = Electromagnetic waves.

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