The velocity of electromagnetic waves is para | vedclass

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(B) In an electromagnetic wave,the electric field vector $\vec{E}$ and the magnetic field vector $\vec{B}$ oscillate perpendicular to each other and a

Vedclass · Accepted Answer

$\vec{E} 	imes \vec{B}$

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(B) In an electromagnetic wave,the electric field vector $\vec{E}$ and the magnetic field vector $\vec{B}$ oscillate perpendicular to each other and also perpendicular to the direction of wave propagation.According to the properties of electromagnetic waves,the direction of propagation of the wave is given by the direction of the Poynting vector $\vec{S}$,which is defined as $\vec{S} = \frac{1}{\mu_0} (\vec{E} 	imes \vec{B})$.Since the velocity vector $\vec{v}$ of the electromagnetic wave is in the same direction as the energy flow (Poynting vector),the velocity is parallel to the cross product $\vec{E} 	imes \vec{B}$.

The velocity of electromagnetic waves is parallel to which of the following?

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