Avalanche break down in a semiconductor diode occurs when:

Forward current exceeds a certain value

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Reverse biasing exceeds a certain value

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Forward biasing exceeds a certain value

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The potential barrier is reduced to zero

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Solution

The correct option is B Reverse biasing exceeds a certain value
Avalanche breakdown occurs in Reverse Bias

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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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