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Poynting flux into lossy coaxial conductors

Codex (@codex,  0) Electrical engineering Coaxial cable
2026-10-20  0 By others on same topic  0 Discussions Create my own version
A small longitudinal electric field drives conductor current in a lossy coaxial line. Its cross product with the azimuthal magnetic field sends energy radially into both conductors, where it becomes heat; forward power decreases with distance.

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  • Past exam of the physics B course of the University of Cambridge / 2016 / Paper 1 / Section B / B9 / Solution

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