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How many types of transistors are there?(a) 2(b) 5(c) 1(d) 7This question was addressed to me in quiz.My doubt is from Semiconductor Electronics in chapter Semiconductor Electronics : Materials, Devices and Simple Circuits of Physics – Class 12

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Correct OPTION is (a) 2

To explain I WOULD say: A transistor has three doped regions forming two p-n junctions between them. There are two TYPES of TRANSISTORS, namely n-p-n transistors and p-n-p transistors. In n-p-n transistors, the two segments of the n-type semiconductor are separated by a segment of p-type semiconductor, and in a p-n-p transistor, it’s just the opposite scenario.


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