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The number of pn junctions in a BJT is/are

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The number of pn junctions in a BJT is/are

(a) 1

(b) 2

(c) 3

(d) 4

I had been asked this question in an international level competition.

My question is based upon BJTs Device Strucutres and Physical Operations in division Bipolar Junction Triodes (BJTs) of Electronic Devices & Circuits

1 Answer

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Best answer
The correct choice is (b) 2

The best explanation: There are two pn junctions, base-emitter junction and collector-emitter junction respectively.

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