List of top Electronics and Communication Engineering Questions on Electric circuits and fields

In a non-magnetic medium electric field \( E = E_0\cos\omega t \) is applied. If the permittivity of the medium is \( \varepsilon \) and the conductivity is \( \sigma \) then the ratio of the amplitudes of the conduction current density and displacement current density will be:

For electrostatic fields in charge free atmosphere, which one of the following is correct?