The ratio of the magnitude of the magnetic field and electric field intensity of a plane electromagnetic wave in free space of permeability ${\mu _0}$ and permittivity ${\varepsilon _0}$ is (Given that c - velocity) of light in free space

Question

${{\sqrt {{\mu _0}{\varepsilon _0}} } \over c}$

${1 \over c}$

${c \over {\sqrt {{\mu _0}{\varepsilon _0}} }}$

Solution

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