The velocity of electromagnetic waves is para | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(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

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

Vedclass · Answer

(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?

Similar Questions

$A$ plane electromagnetic wave of frequency $35 \ MHz$ travels in free space along the $X$-direction. At a particular point (in space and time) $\overrightarrow{E} = 9.6 \ \hat{j} \ V/m$. The value of the magnetic field at this point is:

Choose the correct statement.

An electromagnetic wave travels along the $z$-axis. Which of the following pairs of space and time-varying fields would generate such a wave?

$A$ monochromatic beam of light has a frequency $v = \frac{3}{2\pi} \times 10^{12} \, Hz$ and is propagating along the direction $\vec{n} = \frac{\hat{i} + \hat{j}}{\sqrt{2}}$. It is polarized along the $\hat{k}$ direction. The acceptable form for the magnetic field $\vec{B}$ is:

If $\vec{E}$ and $\vec{B}$ represent electric and magnetic field vectors of an electromagnetic wave,the direction of propagation of the wave is along

Vedclass Test Series

Exam Paper Generator

Online Exam Module