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Which mechanism causes signal attenuation in long submarine cables?

A)Dielectric absorption by cable insulation
B)Resistive skin effect dominates impedance
C)Eddy currents from metallic shielding
D)Modal dispersion creates signal interference

💡 Explanation

Dielectric absorption causes attenuation because the insulation acts as a capacitor, storing charge and releasing it slowly. This energy loss is called dielectric loss. Therefore, the signal weakens. Rather than metallic loses, dielectric absorption dominates.

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