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Which outcome results when excessively high common-mode voltage exists on a differential signaling circuit?

A)Increased electromagnetic interference emission
B)Reduced signal propagation delay
C)Improved power conversion efficiency
D)Enhanced impedance matching

💡 Explanation

Electromagnetic interference increases because common-mode voltage affects the *differential noise rejection*, allowing unwanted signals to radiate; therefore, increased interference occurs, rather than improved signal characteristics, because rejection is degraded by the imbalance of conducted signal pathways.

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