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Which risk increases when a digital signal propagates through a long copper cable carrying high frequency data?

A)Increased thermal carrier mobility
B)Reduced faraday cage effectiveness
C)Signal attenuation due to skin effect
D)Elevated piezoelectric crystal resonance

💡 Explanation

Signal attenuation increases due to the skin effect mechanism, where high-frequency currents flow mainly along the conductor's surface. This happens because the impedance increases near the center, therefore the current concentrates at the surface, rather than distributing evenly, therefore causing attenuation of the signal.

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