Question 194: EM waves

Question

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

Accepted Answer

We know,
$${{{E_0}} \over {{B_0}}}$$ (in vacuum) = c
$$	herefore$$ $${{{B_0}} \over {{E_0}}} = {1 \over c}$$
or, $${{{B_0}} \over {{E_0}}} = \sqrt {{\mu _0}{\varepsilon _0}} $$

Answer

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

Answer

c

Answer

$${1 \over c}$$

Answer

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

EM waves

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

Choose the correct answer: