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← ScienceWhich conduction effect occurs when the applied bias overcomes threshold?
A)Zener diode avalanche breakdown occurs✓
B)Schottky contact depletion layer widens
C)MOSFET channel gets pinched off
D)Transistor enters the saturation mode
💡 Explanation
Zener diode avalanche breakdown occurs due to strong electrical fields causing electrons to tunnel at narrow band gaps, because electron hole pairs get generated by impact ionization; Therefore this outcome becomes apparent at larger voltages, rather than limiting the reverse current like other diodes under lower constraint.
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