Skin-effect surface resistance
= Skin-effect surface resistance
{title2=$R_s$}
In the normal skin-effect regime of a good conductor, $\delta=\sqrt{2/(\mu\sigma\omega)}$ and the surface resistance is $R_s=1/(\sigma\delta)=\sqrt{\mu\omega/(2\sigma)}$. For identical geometries, resistance ratios depend on the square root of <magnetic permeability> divided by conductivity.