Formula:

ω = 2π * f
δ = √((2 * ρ) / (ω * μ_r * μ_o))


Where,
δ = Skin Effect
f = Frequency
ρ = Resistivity of the Conductor
ω = Angular Frequency of Current
μ_r = Relative Magnetic Permeability of the Conductor
μ_o = Permeability of Free Space

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