Give the equation that relates the speed of light $c$,the permeability of free space ${\mu _0}$,and the permittivity of free space ${\epsilon _0}$.

  • A
    $c = \sqrt{\mu_0 \epsilon_0}$
  • B
    $c = \frac{1}{\sqrt{\mu_0 \epsilon_0}}$
  • C
    $c = \sqrt{\frac{\mu_0}{\epsilon_0}}$
  • D
    $c = \sqrt{\frac{\epsilon_0}{\mu_0}}$

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