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Semiconductor Principles

Q1: A P-N junction mimics a closed switch when it:

A has a low junction resistance

B is reverse biased

C cannot overcome its barrier voltage

D has a wide depletion region

ANS:A - has a low junction resistance

Closed switch means circuit is closed which means switch is ON. Reverse bias provides more resistance to flow of current/electrons. So it can not be reverse biased. It should be when it has a low junction resistance because then only current can flow properly.



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