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← ScienceWhich mechanism causes increased interference coupling when PCB trace spacing shrinks?
A)Increased crosstalk via parasitic capacitance✓
B)Enhanced skin effect attenuates signals
C)Reduced inductance filters high frequencies
D)Minimized impedance mismatches improves signal
💡 Explanation
Shrinking trace spacing strengthens electric fields, causing crosstalk via parasitic capacitance, because adjacent traces capacitively couple more strongly. Therefore, interference increases, rather than reduced attenuation from skin effect, inductance, or impedance matching.
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