A) p-n-p transistor
B) n-p-n transistor
C) Field effect transistor
D) Point contact transistor
Correct Answer: C
Solution :
A field effect transistor (FET) is a three terminal semiconductor device in which the current is carried by majority carriers only and is controlled by an electric field. A FET is a unipolar device since, the conduction of current is due to majority charge carriers only. While p-n-p and n-p-n are bipolar junction transistors, in which both holes and electrons play part in conduction process.
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