alleryIn an electromagnetic wave, the electric and magnetic fields are:
APerpendicular to each other
BParallel alongside each other
COpposite in sign to each other
DIdentical in size to each other
Answer & Solution
Correct answer: A. Perpendicular to each other
1. Maxwell's equations fix the geometry of the wave completely.
2. The two fields and the direction of travel form a set of three.
3. Electric and magnetic fields in an electromagnetic wave are perpendicular to each other.
4. They are also perpendicular to the direction of propagation.
_Source: syllabus Physics Part I, Ch 8 'Electromagnetic Waves'_
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