BasicB-004-004-002

Which semiconductor device has a gate, a drain and a source?

D
Answer
Components and circuits
Type
A
Point-contact transistor
B
Bipolar transistor
C
Unijunction transistor
D
Field-effect transistor

Answer Notes

A Field-Effect Transistor (FET) is a type of semiconductor device that relies on an electric field to control the flow of current. Its three primary terminals are always named the gate, the drain, and the source. In contrast, a bipolar transistor (BJT) uses completely different terminology for its terminals: the base, the collector, and the emitter. Other options like the unijunction transistor have an emitter and two bases, which also rules them out.
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When considering the material between source and drain, what are two basic types of field-effect transistors (FET)?
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In a field-effect transistor, which electrode controls the resistance of the device's channel?