In electromagnetic waves, the electric and magnetic vectors are:
Correct answer: C. Perpendicular
- A. Parallel
- B. Anti-parallel
- C. Perpendicular
- D. None of the above
Explanation
In electromagnetic waves, the electric and magnetic fields are oriented perpendicular to each other and to the direction of wave propagation. This orthogonal relationship is fundamental to the nature of electromagnetic waves, ensuring energy is transmitted efficiently through space. Option A is incorrect because electric and magnetic fields are never parallel in electromagnetic waves. Option B is incorrect as anti-parallel does not describe the orientation accurately. Option D is incorrect because there is a correct orientation mentioned in the options.
This question appeared on the ETEA MDCAT 2012 paper, which you can sit online with every answer explained.
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About Electromagnetic Waves
Electromagnetic waves consist of mutually perpendicular, oscillating electric and magnetic fields that also remain perpendicular to the direction of propagation. They travel through vacuum at the speed of light and include radio waves, microwaves, infrared, visible, ultraviolet, X-rays and gamma rays. Unlike mechanical waves, they do not require a material medium.
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