The electric field in an electromagnetic wave is given by
$E = (50 N C^{- 1}) \sin ω (t - \frac{x}{c})$
The energy contained in a cylinder of volume $V$ is $5.5 \times 10^{- 12} J .$ The value of $V$ is _______ ${cm}^{3} .$
(given $ϵ_{0} = 8.8 \times 10^{- 12} C^{2} N^{- 1} m^{- 2}$ )

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TestHub · Accepted Answer

Energy density = 1 2 ε 0 E 2 Energy = 1 2 ε 0 E 2 × volume 5 . 5 × 10 - 12 = 1 2 × 8 . 8 × 10 - 12 × 50 2 × V V = 500 cm 3

Physics - EM Waves Question with Solution | TestHub

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