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Electric constant

  1. Aug 28, 2010 #1
    hi everyone,

    what is mean by electric constant?
    electric constant=1/(magnetic constant * speed of light)

    please explain this equation.
  2. jcsd
  3. Aug 28, 2010 #2


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    Staff: Mentor

    In that equation, the "electric constant" is the [itex]\epsilon_0[/itex] that appears in Coulomb's law for the electric force between two point charges:

    [tex]F_e = \frac{1}{4 \pi \epsilon_0} \frac {q_1 q_2}{r^2}[/tex]
  4. Aug 29, 2010 #3
    thank u for reply. what is mean by epselon zero(electric constant) please explain about that
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