Energy density of electric field
$$\omega_{p} = \frac{\varepsilon0\cdot \varepsilon\cdot E^{2}}{2}$$
ω_p - energy density of electric field
ε0 - permittivity constant
ε - dielectric constant (permittivity)
E - electric field
ε0 - permittivity constant
ε - dielectric constant (permittivity)
E - electric field
Find
It is known that:
= 