Question

A medium has conductivity σ = 10 2 mho/m , μ=2, ε=3. The depth of penetration at 2 MHz is?

Answer 1

$\delta=1000\sqrt{\frac{\rho}{\mu\mu_0f\pi}}=1000\sqrt{\frac{1}{\mu\mu_0f\pi\sigma}}=1000\sqrt{\frac{1}{2\cdot 4\cdot3.14\cdot 10^{-7}\cdot2000000\cdot3.14\cdot100}}=25.17mm$