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← TechnologyWhich unstable outcome rapidly escalates due to positive feedback in a MOSFET?
A)Thermal runaway current increase✓
B)Gate oxide layer breakdown
C)Channel length modulation saturation
D)Substrate bias voltage fluctuation
💡 Explanation
Thermal runaway arises because increased temperature raises carrier mobility, increasing current; the increased current then further elevates temperature via resistive heating. Therefore thermal runaway occurs, rather than a stabilized temperature, due to positive feedback accelerating dissipation.
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