Which one of the following is the property of | vedclass

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(B) The average electric energy density of an $EM$ wave in free space is given by $\mu_E = \frac{1}{2} \varepsilon_0 E_{rms}^2 = \frac{1}{4} \varepsil

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The energy contributions of both electric and magnetic fields are equal

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(B) The average electric energy density of an $EM$ wave in free space is given by $\mu_E = \frac{1}{2} \varepsilon_0 E_{rms}^2 = \frac{1}{4} \varepsilon_0 E_0^2$. Similarly,the average magnetic energy density is $\mu_B = \frac{1}{2\mu_0} B_{rms}^2 = \frac{B_0^2}{4\mu_0}$. Using the relation $E_0 = cB_0$ and $c = \frac{1}{\sqrt{\mu_0 \varepsilon_0}}$,we can substitute $B_0 = \frac{E_0}{c} = E_0 \sqrt{\mu_0 \varepsilon_0}$ into the expression for $\mu_B$. This yields $\mu_B = \frac{(E_0 \sqrt{\mu_0 \varepsilon_0})^2}{4\mu_0} = \frac{E_0^2 \mu_0 \varepsilon_0}{4\mu_0} = \frac{1}{4} \varepsilon_0 E_0^2$. Since $\mu_E = \mu_B$,the energy contributions of both electric and magnetic fields are equal.

Which one of the following is the property of a monochromatic,plane electromagnetic wave in free space?

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