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← ScienceWhich consequence results when exceeding the Zener breakdown voltage in a semiconductor diode?
A)Increased forward current conduction
B)Reduced depletion region capacitance
C)Electron flow from valence band✓
D)Hole injection into conduction band
💡 Explanation
Exceeding Zener voltage forces electrons to tunnel from the valence band to the conduction band via Quantum Tunneling, because high electric field narrows the barrier; therefore, increased reverse current occurs, rather than forward conduction or changes in capacitance at typical voltages.
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