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← ScienceWhich outcome occurs when a voltage spike couples capacitively?
A)Spurious signal injection✓
B)Dielectric material breakdown
C)Ohmic resistance reduction
D)Inductive reactance cancellation
💡 Explanation
Capacitive coupling initiates spurious signal injection because induced current from electromagnetic interference creates undesired voltage fluctuation via parasitic capacitance. Therefore, a nearby signal picks up noise, rather than material breakdown or inductance concerns relevant at higher voltages.
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