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← ScienceWhich outcome occurs when increasing reverse bias voltage on a Zener diode?
A)Avalanche breakdown causes reverse current✓
B)Forward current experiences exponential increase
C)Depletion region becomes less conductive
D)Diode capacitance increases proportionally
💡 Explanation
Avalanche breakdown in a Zener diode causes increased reverse current because electrons gain sufficient energy to ionize atoms within the depletion region leading to exponential current increase. Therefore, reverse current surges, rather than an increase in capacitance because voltage strengthens the electric field.
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