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Which failure results when electrons tunnel through silicon dioxide?

A)Logic gate threshold voltage shift
B)Electromigration in metal interconnects
C)Increased resistance of polysilicon
D)Latch-up in parasitic bipolar transistors

💡 Explanation

Excessive currents drive threshold voltage shift because Fowler-Nordheim tunneling injects electrons into the gate oxide, causing charge build-up and altering transistor characteristics; therefore reduced gate control results rather than electromigration from high currents, or channel-related side effects.

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