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← ScienceWhich outcome disables a MOSFET when gate voltage decreases?
A)Channel depletion and reduced conductivity✓
B)Increased electron impact ionization rate
C)Gate oxide breakdown accelerating rapidly
D)Substrate dopant atoms release electrons
💡 Explanation
Channel depletion causes reduced conductivity as fewer electrons are available for current flow because the gate voltage is reduced to below the threshold voltage; therefore the MOSFET is disabled, rather than increased ionization or gate oxide breakdown.
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