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The unit of permittivity of free space ${\varepsilon _0}$ is
  • A$Coulomb/Newton-metre$
  • B$Newton-metr{e^2}/Coulom{b^{\rm{2}}}$
  • C${\rm{Coulom}}{{\rm{b}}^{\rm{2}}}/{(Newton{\rm{ - }}metre)^2}$
  • D$Coulom{b^2}/Newton{\rm{ - }}metr{e^2}$
AIPMT 2004, Easy
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