The electric field in an electromagnetic wave is given as
$\overrightarrow{E}=20\sin \omega \left(t-\frac{x}{c}\right)\overrightarrow{\mathrm{j}}\mathrm{N} {\mathrm{C}}^{-1}$, where $\omega$ and $c$ are angular frequency and velocity of electromagnetic wave respectively. The energy contained in a volume of $5\times {10}^{-4} {\mathrm{m}}^3$ will be
(Given ${\epsilon }_0=8.85\times {10}^{-12}{\mathrm{C}}^2 {\mathrm{N}}^{-1} {\mathrm{m}}^{-2}$)

• A

  $88.5\times {10}^{-13} \mathrm{J}$
• B

  $17.7\times {10}^{-13} \mathrm{J}$
• C

  $28.5\times {10}^{-13} \mathrm{J}$
• Correct answer
  D

  $8.85\times {10}^{-13} \mathrm{J}$

Hence, the correct answer is option: 'D'.