If μ0 is permeability of free space and ϵ0 is permittivity of free space, the speed of light in vacuum is given by
1
\(\sqrt {{\mu _0}\epsilon {_0}} \)
2
\(\sqrt {\frac{{{\mu\epsilon_0}}}{{{\epsilon_0}}}} \)
3
\(\sqrt{\frac{1}{{{\mu _0}{\varepsilon _0}}}}\)
4
\(\sqrt {\frac{{{\epsilon_0}}}{{{\mu _0}}}} \)