A plane electromagnetic wave travels in vacuum along z-direction. Then which of the following statements is true for the electric and magnetic field vector?

Question

Question

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AAI ATC Junior Executive 27 July 2022 Shift 1 Official Paper

The electric field (E) and magnetic field (H) lie in the y-z plane and they are mutually perpendicular.
The electric field (E) and magnetic field (H) lie in the x-z plane and they are mutually perpendicular.
The electric field (E) and magnetic field (H) lie in the two different planes and they are mutually perpendicular.
The electric field (E) and magnetic field (H) lie in the x-z plane and they are parallel to each other.

Answer 1

Concept:

Electromagnetic wave:

It can also be said that electromagnetic waves are the composition of oscillating electric and magnetic fields.
Electromagnetic waves are shown by a sinusoidal graph.
It consists of time-varying electric and magnetic fields which are perpendicular to each other and are also perpendicular to the direction of propagation of waves.
The direction of propagation of the electromagnetic waves is given by the Poynting vector.
Poynting vector, \(\vec P=\vec E\times \vec B\)

F2 J.K 13.5.20 Pallavi D1

The speed of electromagnetic waves is equal to the speed of light in air.
The relation between the magnitude of the electric field and the magnetic field is given as E0 = B0 c

Explanation:

A plane electromagnetic wave travels in a vacuum along the z-direction.
The electric field (E) and magnetic field (H) lie in the two different plane and they are mutually perpendicular.