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← ScienceWhich mechanism causes degradation of signal integrity when a high-frequency signal passes through long transmission lines?
A)Skin effect concentrates current flow✓
B)Electromigration depletes conductive material
C)Dielectric breakdown causes impedance mismatch
D)Thermal expansion severs connections
💡 Explanation
The skin effect causes signal degradation because higher frequencies concentrate current near the conductor's surface, thereby increasing resistance and signal loss. Therefore, skin effect matters here, rather than bulk resistance issues dominant at low frequency.
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