The average value of electric energy density in an electromagnetic wave is. [where $E_0$ is peak value]

  • A
    $1/4 \epsilon_0 E_{rms}^2$
  • B
    $1/2 \epsilon_0 E_0^2$
  • C
    $1/2 \epsilon_0 E_0$
  • D
    $1/4 \epsilon_0 E_0^2$

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