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Zener breakdown in a semi-conductor diod...

Zener breakdown in a semi-conductor diode occurs when

A

Forward current exceeds certain value

B

Reverse bias exceeds certain value

C

Forwads bias exceeds certain value

D

Potential barrier is reduced to zero

Text Solution

Verified by Experts

The correct Answer is:
B
When reverse biase is increased, the electric field at the junction also increases. At some stage the electric fields breaks the covelent bond, thus the large number of charge carriers are generated. This is called Zener breakdown.
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