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← ScienceWhich outcome occurs when a high-frequency alternating current flows through a planar inductor near a metal surface?
A)Eddy current heating in the metal✓
B)Reduced inductance from increased flux
C)Resonance shift due to dielectric losses
D)Increased Q-factor from skin effect
💡 Explanation
When a high-frequency AC flows, the changing magnetic field induces eddy currents in the nearby metal surface due to electromagnetic induction, causing resistive heating. Therefore, eddy current heating results, rather than inductance reduction, resonance shift or increased Q-factor, which arise from different electromagnetic phenomena.
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