For a good conductor, the depth of penetration of electromagnetic wave is given by:
1
\(\delta = {\left[ {\frac{2}{{\omega \sigma \mu }}} \right]^{\frac{1}{2}}}\)
2
\(\delta = {\left[ {\frac{1}{{\omega \sigma \mu }}} \right]^{\frac{1}{2}}}\)
3
\(\delta = {\left[ {\frac{2}{{\omega \sigma^2 \mu }}} \right]^{\frac{1}{2}}}\)
4
\(\delta = {\left[ {\frac{2}{{\omega \sigma }}} \right]^{\frac{1}{2}}}\)