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← ScienceWhich outcome occurs when strong external magnetic fields interfere with a resonant inductive coupling wireless charging system?
A)Reduced power transfer efficiency.✓
B)Increased charging voltage instability.
C)Complete cessation of power transfer.
D)Elevated operating frequency oscillation
💡 Explanation
When external magnetic fields influence a resonant inductive charging system, parasitic inductive coupling occurs because the external fields induce unwanted currents, leading to detuning of the resonant circuit and reduced coupling efficiency. Therefore, reduced power transfer results, rather than voltage instability, cut-off, or frequency oscillation, which depend on different failure mechanisms.
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