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Physics, 06.04.2020 16:27 rayniqueamee2002

Which of the following expressions gives the ratio of the energy density of the magnetic field to that of the electric field just inside the surface of a wire of length L, radius r, and resistance R which is carrying a current I?

a) μ₀/ϵ₀ (I L /R 2πr)²
b) 1/μ₀ ϵ₀ (I L /R 2πr)²
c) 1/μ₀ ϵ₀ (L /R 2πr)²
d) μ₀/ϵ₀ (L /R 2πr)²

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