A plane electromagnetic wave of angular frequency $\omega$ propagates in a poorly conducting medium of conductivity $\sigma$ and relative permittivity $\varepsilon$. Find the ratio of conduction current density and displacement current density in the medium.

  • A

    $\frac{\varepsilon \varepsilon_0 \omega}{\sigma}$

  • B

    $\frac{\sigma}{\varepsilon \varepsilon_0 \omega}$

  • C

    $\frac{\omega}{\sigma \varepsilon \varepsilon_0 }$

  • D

    $\frac{\omega \sigma}{ \varepsilon \varepsilon_0 }$

Similar Questions

What physical quantity is the same for $X-$rays of wavelength $10^{-10} \;m ,$ $red$ light of wavelength $6800\; \mathring A$ and radiowaves of wavelength $500 \;m ?$

Which of the following statement is false for the properties of electromagnetic waves ?

  • [AIPMT 2010]

The intensity of the light from a bulb incident on a surface is $0.22 \,W / m ^{2}$. The amplitude of the magnetic field in this light-wave is_______ $\times 10^{-9} \,T$. (Given : Permittivity of vacuum $\epsilon_{0}=8.85 \times 10^{-12} \,C ^{2} N ^{-1} m ^{-2}$, speed of light in vacuum $c =3 \times 10^{8} \,ms ^{-1}$ )

  • [JEE MAIN 2022]

A point source of $e. m.$ radiation has an average power output of $800\,W$ . The maximum value of electric field at a distance $4.0\,m$ from the source is...$V/m$

A lamp emits monochromatic green light uniformly in all directions. The lamp is $3%$ efficient in converting electrical power to electromagnetic waves and consumes $100\,W $ of power. The amplitude of the electric field associated with the electromagnetic radiation at a distance of $10m$  from the lamp will be........$V/m$