The energy density associated with electric field $\overrightarrow{ E }$ and magnetic field $B$ of an electromagnetic wave in free space is given by ( $\epsilon_0-$ permittivity of free space, $\mu_0$ - permeability of free space)
The energy density associated with electric field $\overrightarrow{ E }$ and magnetic field $B$ of an electromagnetic wave in free space is given by ( $\epsilon_0-$ permittivity of free space, $\mu_0$ - permeability of free space)
- [JEE MAIN 2023]
- A
$U _{ E }=\frac{ E ^2}{2 \epsilon_0}, U _{ B }=\frac{ B ^2}{2 \mu_0}$
- B
$U _{ E }=\frac{ E ^2}{2 \epsilon_0}, U _{ B }=\frac{\mu_0 B ^2}{2}$
- C
$U _{ E }=\frac{\epsilon_0 E ^2}{2}, U _{ B }=\frac{\mu_0 B ^2}{2}$
- D
$U _{ E }=\frac{\epsilon_0 E ^2}{2}, U _{ B }=\frac{ B ^2}{2 \mu_0}$
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