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← ScienceWhich risk increases when certain semiconductors exceed reverse voltage limits?
A)Avalanche breakdown causes excess heat✓
B)Increased Zener tunneling lowers current
C)Ohmic resistance drops precipitously
D)Capacitance positively affects response
💡 Explanation
Avalanche breakdown causes excess heat because high electric fields accelerate electrons, triggering impact ionization; therefore current increases drastically rather than reduced tunneling, as resistance changes happen thermally.
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