For an electromagnetic| Electromagnetic Waves

JEE MAIN 2021

16-03-2021 S1

Question

For an electromagnetic wave travelling in free space, the relation between average energy densities due to electric $\left(U_e\right)$ and magnetic $\left(U_m\right)$ fields is :

Select the correct option:

$U_e=U_m$

$U_e>U_m$

$U_e

$\mathrm{U}_{\mathrm{e}} \leq \mathrm{U}_{\mathrm{m}}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

In EMW, Average energy density due to electric $\left(\mathrm{U}_{\mathrm{e}}\right)$ and magnetic $\left(\mathrm{U}_{\mathrm{m}}\right)$ fields is same.

Question Tags

JEE Main

Physics

Easy

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