Which mechanism limits signal propagation speed through long copper coaxial cables?

💡 Explanation

When a high-frequency signal travels in a coaxial cable, the dielectric material between the conductors polarizes, causing capacitance, retarding signal propagation because polarization slows the advancement of the electromagnetic field. Therefore dielectric polarisation is the limiting factor, rather than skin effect, oxidation, or micro bends which influence other signal properties.

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