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Difficulty: EasyTransistors

In a field-effect transistor (FET), which terminal serves as the control element that regulates the current passing between the source and the drain?

  1. A
    Base
  2. GateAnswer
  3. C
    Collector
  4. D
    Cathode

Answer

Gate
In a field-effect transistor (FET), the gate terminal applies an electric field that alters the conductivity of the semiconductor channel, thereby regulating the flow of current between the source and the drain.

Step-by-Step Solution

1
Identify the transistor family specified in the question.
The device is a field-effect transistor (FET), which utilizes Gate, Source, and Drain terminals.
Field-effect transistors use different terminal designations and operational principles compared to bipolar junction transistors.
2
Determine the functional role of each FET terminal.
Current enters at the source and leaves through the drain, while voltage applied to the gate controls channel conductivity.
The gate terminal acts as the primary control electrode that modulates current flow between the source and drain.

Key Concept

Field-Effect Transistor (FET) Terminal Designations and Roles
Estimated Time:45s
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Topics

Transistors

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