The electric and magnetic fields associated w | vedclass

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

Question

(A) In an electromagnetic wave,the electric field $\vec{E}$ and the magnetic field $\vec{B}$ are mutually perpendicular to each other and also perpend

Vedclass · Accepted Answer

$\vec{E} = E_0 \hat{i}, \vec{B} = B_0 \hat{j}$

Vedclass · Answer

(A) In an electromagnetic wave,the electric field $\vec{E}$ and the magnetic field $\vec{B}$ are mutually perpendicular to each other and also perpendicular to the direction of wave propagation.The direction of wave propagation is given by the direction of the cross product $(\vec{E} 	imes \vec{B})$.Given that the wave propagates along the $Z$-axis (direction $\hat{k}$),we must have $(\vec{E} 	imes \vec{B})$ in the direction of $\hat{k}$.Checking option $A$: $\hat{i} 	imes \hat{j} = \hat{k}$. This matches the direction of propagation.Therefore,the fields are represented by $\vec{E} = E_0 \hat{i}$ and $\vec{B} = B_0 \hat{j}$.

The electric and magnetic fields associated with an electromagnetic wave propagating along the $Z$-axis can be represented by:

Similar Questions

The oscillating electric and magnetic field vectors of an electromagnetic wave are along

The ratio of the magnitudes of the electric field and $10^8$ times the magnetic field of a plane electromagnetic wave is

For a plane electromagnetic wave,which of the following quantities has an average value of zero?

If the magnetic field in a plane progressive wave is represented by the equation $B_{y} = 2 \times 10^{-7} \sin(0.5 \times 10^3 x + 1.5 \pi \times 10^{11} t) \ T$,then the frequency of the wave is (In the equation,time $t$ is in seconds).

If $c$ is the speed of electromagnetic waves in vacuum,its speed in a medium of dielectric constant $K$ and relative permeability $\mu_r$ is

Vedclass Test Series

Exam Paper Generator

Online Exam Module