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← ScienceWhich outcome occurs when current rapidly drops through coil?
A)Increased back EMF prevents current change
B)Decrease in parasitic capacitance dominates
C)Resonant LC transient ringing initiates✓
D)Core saturation reduces coil inductance
💡 Explanation
A rapid current drop induces significant voltage across the coil due to electromagnetic induction creating transient LC oscillation, also called transient ringing. This occurs because the inductor voltage quickly changes, rather than a stable back EMF or capacitance, due to the field.
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