MHT CET Physics question

Not in JEE Advanced syllabus

Under which of the following conditions does an avalanche breakdown in a semiconductor diode occur?

(A)When potential barrier is reduced to zero.
(B)When reverse bias exceeds a certain value.Correct
(C)When forward bias exceeds a certain value.
(D)When forward current exceeds a certain value.

Answer: (B)

Solution

Avalanche breakdown is a reverse-bias phenomenon: when the reverse voltage exceeds the breakdown value, minority carriers gain enough energy to knock out more

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Question ID VK-085192