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← ScienceWhich risk increases when distributed capacitance is excessive on a high-speed PCB?
A)Signal reflection increases significantly✓
B)Inductive coupling greatly reduces
C)Ohmic resistance sharply declines
D)Thermal runaway risk drastically falls
💡 Explanation
Excessive capacitance increases signal reflection because impedance mismatch occurs due to parasitic capacitive loading along signal traces. Therefore, signals encounter discontinuities rather than propagating cleanly, rather than ohmic losses dominating.
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