The electric and magnetic field of an electromagnetic wave is

Options

A. in phase and parallel to each other
B. in opposite phase and perpenducular to each other
C. in opposite phase and parallel to each other
D. in phase and perpenducular to each other

Answer

d

Explanation

Electromagnetic waves are those wave in which there are sinusoidal variation of electric and magnetic field vectors at right angles to each other as well as right angles to the direction of wave propagation. The sinusoidal variation in both electric and magnetic field vectors `vecE` and `vecB` occurs, simultaneously. As a result, they attain the maxima and minima at the same place and at the same time. The amplitudes of the electric and magnrtic field in free space are ralated by
`(E_(0))/(B_(0))=c`

In figure, electric field vector `(vecE)` and field vector `(vecB)` are vibrating along `Y` and `Z` directions and propagation of electromagnetic wave is show in `X`-direction. Hence, electric and magnetic fieldg are in phase and perpendicular to each other.