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Which mechanism causes signal loss as radio wave frequency increases within a coaxial cable?

A)Increased skin effect resistance
B)Dielectric polarization saturation
C)Impedance mismatch amplification
D)External electromagnetic interference resonance

💡 Explanation

As radio wave frequency increases, the skin effect causes current to flow closer to the conductor surface increasing the effective resistance which attenuates the signal. Therefore increased skin effect resistance causes signal loss, rather than dielectric saturation, impedance amplification, or external interference, which depend on different cable properties.

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