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← TechnologyWhich consequence results when drain voltage rapidly decreases on a switched MOSFET?
A)Increased electromagnetic interference (EMI)✓
B)Reduced gate oxide stress
C)Decreased power dissipation
D)Enhanced channel mobility
💡 Explanation
Increased EMI occurs because a rapid change in drain voltage induces a displacement current in parasitic capacitances, which creates high-frequency noise through inductive coupling. This is the mechanism called 'displacement current', therefore EMI increases, rather than reduced oxide stress due to slower voltage changes.
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