Question

what osscilates in electromagnetic waves
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Answer 1

Electromagnetic waves have two components: an oscillating electric field and a perpendicular, the comoving magnetic field which oscillates at the same frequency, but with a phase-shifted by 90°. They describe the movement of a packet of energy between two points.

Answer 2

Answer:

Electromagnetic waves consist of both electric and magnetic field waves. These waves oscillate in perpendicular planes with respect to each other, and are in phase. The creation of all electromagnetic waves begins with an oscillating charged particle, which creates oscillating electric and magnetic fields.