TSA Electrical Applications Practice Test

Question: 1 / 400

How many pins does a standard transistor have?

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A standard transistor has three pins, which correspond to its three terminals: the emitter, the base, and the collector. Each of these terminals has a specific function within the operation of the transistor.

The emitter is responsible for supplying charge carriers (electrons or holes), the base controls the transistor's operation and allows for modulation of current, and the collector is where the output current flows to the next stage of a circuit. This three-terminal configuration is fundamental to the functioning of both bipolar junction transistors (BJTs) and field-effect transistors (FETs), making it a key concept in electronics and electrical engineering.

The existence of two, four, or five pins does not conform to standard transistor designs, as most configurations used in practical applications are based around the three-pin structure.

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