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← TechnologyWhich risk increases when resonant inductive coupling transfers power across a widened air gap?
A)Increased circuit parasitic capacitance effects✓
B)Enhanced ferrite core saturation margin
C)Reduced impedance matching sensitivity
D)Minimized electromagnetic field interference
💡 Explanation
Increased air gap causes lower mutual inductance; therefore, achieving equivalent power transfer requires increased frequency and voltage, increasing parasitic capacitance from the power circuit because the capacitive reactance decreases rather than affecting saturation.
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