In a medium, the ratio of relative permeability to relative permittivity is μᵣ/εᵣ = 1/4. Given √(μ₀/ε₀) = 120π Ω, find ratio E/H for an electromagnetic wave:
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Question

In a medium, the ratio of relative permeability to relative permittivity is μᵣ/εᵣ = 1/4. Given √(μ₀/ε₀) = 120π Ω, find ratio E/H for an electromagnetic wave:

G1 Physics · Accepted Answer

Step 1: The characteristic impedance of a medium is E/H = √(μ/ε). Step 2: E/H = √(μ₀/ε₀) × √(μᵣ/εᵣ) = 120π × √(1/4). Step 3: E/H = 60π Ω, which corresponds to option C. Final answer: (C) 60π : 1.