Avalanche breakdown in a diode occurs when

Potential barrier is reduced to zero.

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Forward current exceeds certain value.

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Reverse bias exceeds a certain value.

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None of these .

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Solution

The correct option is C Reverse bias exceeds a certain value.
Avalanche breakdown in a diode occurs when we apply high reverse voltage across the diode which is higher than the zener break down voltage. Hence Avalanche breakdown in a diode occurs when reverse bias exceeds a certain value.

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Similar questions

When a forward bias is applied to a p-n junction, it

(a) raises the potential barrier.

(b) reduces the majority carrier current to zero.

(d) None of the above.

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V_{o}

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