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← ScienceWhich consequence occurs when electrons face oxide barrier?
A)Gate leakage current significantly increases✓
B)Transistor gain reaches saturation plateau
C)Thermal runaway effects dominate quickly
D)Substrate doping concentration always increases
💡 Explanation
An electron can propagate through a forbidden region with high probability because quantum tunnelling enables carrier transport through the oxide layer therefore a gate leakage happens during fabrication rather than substrate modifications or thermal dissipation during operation.
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