The correct answer is B. base.
The base is the smallest region of a transistor, and it is sandwiched between the emitter and collector regions. The base is made of a semiconductor material with a higher resistivity than the emitter and collector materials. This high resistivity helps to control the flow of current between the emitter and collector regions.
The emitter is the region of a transistor that emits (sends out) charge carriers (electrons or holes). The collector is the region of a transistor that collects charge carriers from the emitter. The collector-base junction is the boundary between the base and collector regions.
The
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