alleryStart learning →How is an NPN transistor built from semiconductor layers?
ATwo p-type layers around an n-type layer
BThree n-type layers in a row
CTwo n-type layers around a p-type layer
DOne p-type layer on a metal
Answer & Solution
Correct answer: C. Two n-type layers around a p-type layer
NPN means a p-type layer sandwiched between two n-type layers.
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