Q. The correct circuit representation of the structure shown in the figure is
Ans: Option A
Points to note to solve this question. 1) Emitter and collector are n-type so the transistor will be
n-p-n
∴ Options (3) and (4) are eliminated
2) The diode is connected between base and collector
Base is n-type
Collector is n++ type
Hence collector will be of n-type and base will be p-type.
