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← ScienceWhich outcome results when high-frequency alternating current flows through a planar inductor etched on a printed circuit board?
A)Increased skin effect and copper losses✓
B)Reduced inductance and parasitic capacitance
C)Uniform current distribution throughout inductor
D)Minimal electromagnetic interference with components
💡 Explanation
Increased operating frequency forces current to conductor surfaces due to skin effect, decreasing effective cross-sectional area and increasing resistance because the magnetic field energy increases toward the surface. Therefore, copper losses will rise, rather than reduce, as skin effect dominates.
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