Question

Why does the electric and magnetic fields travel at right angles to each other in electromagnetic waves???
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Answer 1

Electric fields and magnetic fields (E and B) in an EM wave are perpendicular to each other and are also perpendicular to the direction of propagation of the wave. Because electric and magnetic fields change in a plane (perpendicular to the direction of wave propagation), the direction of change still has some freedom.

Answer 2

Answer:

• As shown in the diagram above, the electric and magnetic fields oscillate (vibrate) at right angles to each other, and the wave moves in a direction at right angles to these fields. ... The resulting electromagnetic (EM) wave does not need a medium to help transmit it, so an EM wave can move freely through a vacuum.

Explanation:

HOPE