Field-Effect Transistor
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ELECTRONICS
Semiconductor Devices
Field-Effect Transistor
Field-effect transistors control current flow using electric fields, enabling modern microelectronics
6 Feb 2026
0
How does a field-effect transistor control the current flowing between its source and drain terminals?
By injecting current into the base terminal to modulate current flow
By mechanically opening and closing a physical switch inside the transistor
By applying a voltage to the gate terminal that creates an electric field altering channel conductivity
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