Question

In an electromagnetic wave, the phase difference between electric and magnetic field vectors $\overrightarrow{E}\text{and}\overrightarrow{B}$ is-

• A. $0$
• B. $\frac{\pi }{2}$
• C. $\pi$
• D. $\frac{\pi }{4}$

Answer 1

The correct option is A $0$

The components of electric field and magnetic field for a $\text{EM}$ waves are,

$E=E_0\sin (\omega t-kx)$ and $B=B_0\sin (\omega t-kx)$

$\therefore$ Both electric and magnetic fields are in phase with each other i.e., phase difference between $\overrightarrow{E}$ & $\overrightarrow{B}$ is zero.

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Hence, $\left(A\right)$ is the correct answer.