The electric field |Electromagnetic Waves |JEE-MAIN 2020

JEE-MAIN 2020

03-09-2020 S2

Question

The electric field of a plane electromagnetic wave propagating along the x direction in vacuum is $\vec{E}=E_0 \hat{j} \cos (\omega t-k x)$. The magnetic field $\vec{B}$, at the moment $t=0$ is

Select the correct option:

$\overrightarrow{\mathrm{B}}=\mathrm{E}_0 \sqrt{\mu_0 \varepsilon_0} \cos (\mathrm{kx}) \hat{\mathrm{j}} \mid$

$\overrightarrow{\mathrm{B}}=\mathrm{E}_0 \sqrt{\mu_0 \varepsilon_0} \cos (\mathrm{kx}) \hat{\mathrm{k}}$

$\overrightarrow{\mathrm{B}}=\frac{\mathrm{E}_0}{\sqrt{\mu_0 \varepsilon_0}} \cos (\mathrm{k} x) \hat{\mathrm{k}}$

$\vec{B}=\frac{E_0}{\sqrt{\mu_0 \varepsilon_0}} \cos (k x) \hat{j}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Physics

Easy

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