Question

What is Transistor? Explain Working of PNP 2 NPN Transistor a
Amplifier.​

Answer 1

Answer:

Definition: The transistor in which one p-type material is placed between two n-type materials is known as NPN transistor. The NPN transistor amplifies the weak signal enter into the base and produces strong amplify signals at the collector end.

Explanation:

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Answer 2

Explanation:

A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. Transistors are one of the basic building blocks of modern electronics. It is composed of semiconductor material usually with at least three terminals for connection to an In an NPN transistor, the current flows from the collector (C) to the Emitter (E), whereas in a PNP transistor, the current flows from the emitter to the collector. ... The working principle of a PNP transistor is such that when the current exists at the base terminal of the transistor, then the transistor shuts OFF.external circuit