Question 13: EM waves

Question

Speed of electromagnetic wave in a medium having relative permittivity $$\varepsilon_r$$ and relative permeability $$\mu_r$$ is (speed of light in air, $$c=3	imes10^8$$ m/s)

Accepted Answer

Speed of EM wave in medium is given as
$$v = {c \over {\sqrt {{\mu _r}{\varepsilon _r}} }}$$

Answer

$${1 \over {\sqrt {{\mu _r}{\varepsilon _r}} }}$$

Answer

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

Answer

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

Answer

$${c \over {{\mu _r}{\varepsilon _r}}}$$

EM waves

Speed of electromagnetic wave in a medium having relative permittivity $\varepsilon_r and relative permeability \mu_r is (speed of light in air, c=3\times10^8$ m/s)

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