Ncert Exercises & Solutions

$Seawater at frequency ν = 4 \times 10^{8} Hz has permittivity ε \approx 80 ε_{0}, permeability μ \approx μ_{0}$ and resistivity $ρ$ =0.25 $Ω$ -m. Imagine a parallel plate capacitor immersed in seawater and driven by an alternating voltage source $V (t) = V_{0} \sin (2 πνt) .$ What fraction of the conduction current density is the displacement current density?