$A$ point source of electromagnetic radiation has an average output power of $800 \, W$. What is the maximum value of the electric field at a distance of $3.5 \, m$ from the source in $V/m$?

  • A
    $70.20$
  • B
    $65.21$
  • C
    $60.5$
  • D
    $62.6$

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