If the ratio of relative permeability to relative permittivity of a uniform medium is 1:4, the ratio of the magnitudes of electric field intensity (E) to the magnetic field intensity (H) of an EM wave propagating in that medium is

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(3) 60π:1. The ratio E/H is the intrinsic impedance of the medium, E/H=√μ/ε=√(μ₀)/(ε₀)√(μᵣ)/(εᵣ). In free space √(μ₀)/(ε₀)=120π Ω. Here (μᵣ)/(εᵣ)=1/4, so √(μᵣ)/(εᵣ)=1/2. E/H=120π×1/2=60π, that is 60π:1.

If the ratio of relative permeability to relative permittivity of a uniform medium is 1:4, the ratio of the magnitudes of electric field intensity (E) to the magnetic field intensity (H) of an EM wave propagating in that medium is

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