Kirk T. McDonald
Abstract
Without using Poynting’s theorem [1], deduce the power radiated by a small loop of current, I(t) = I0 e −iωt, that oscillates with angular frequency ω, where the radius a of the loop obeys ka 1, where k = ωc = 2π/λ and c is the speed of light in vacuum, which surrounds the loop. 2
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Without using Poynting’s theorem [1], deduce the power radiated by a small loop of current, I(t) = I0 e −iωt, that oscillates with angular frequency ω, where the radius a of the loop obeys ka 1, where k = ωc = 2π/λ and c is the speed of light in vacuum, which surrounds the loop. 2
Key concepts: Poynting vector, Effective radiated power, Poynting's theorem, Physics, Radiation, Electromagnetic radiation, Energy current, Dipole