Question
Download Solution PDFThe velocity of an electromagnetic wave is parallel to:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
According to Maxwell, the electromagnetic waves are those waves in which there is a sinusoidal variation of electric and magnetic field vectors at right angles to each other as well as at right angles to the direction of wave propagation.
If the electric field (E) and magnetic field (B) are vibrating along Y and Z direction, the propagation of electromagnetic waves will be along the X-axis.
Therefore, the velocity of the electromagnetic wave is parallel to \(\vec E \times \vec B\).
Poynting Vector:
The Poynting vector describes the magnitude and direction of the flow of energy in electromagnetic waves.
Mathematically, the Poynting vector states that:
\(P = \vec E \times \vec H\;Watt/{m^2}\)
Last updated on Jun 19, 2025
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