Q: What is the main purpose of a transistor in electronic devices?

A To amplify and switch electronic signals
B To store data
C To convert AC to DC
D To measure voltage

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Answer: A

Explanation:

Transistors are semiconductor devices used to amplify and switch electronic signals and power. They consist of three layers of semiconductor material, forming two PN junctions, and come in two types: NPN and PNP. In amplification, a small input current at the base controls a larger current flow between the collector and emitter, enabling the amplification of signals. In switching, the transistor acts as a switch, turning on and off to control electronic signals. Transistors are fundamental in building complex circuits, including amplifiers, oscillators, and digital logic circuits, forming the basis of modern electronic devices and communication systems.

Electronic Devices and Communication System

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Q: What is the main purpose of a transistor in electronic devices?

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