Question

05. The input gate current of a FET is
(a) a few amperes
(b) a few milli amperes
(c) a few micro amperes
(d) negligibly small​

Answer 1

Answer:

the input gate current of a FET is negligibly small

Answer 2

The input gate current of a FET is negligibly small

• The term FET stands for field-effect transistor
• In typical operating conditions, the input gate current of FET is normally very low, on the order of microamperes or even nanoamperes.
• By varying the conductivity of the channel region, the gate terminal of a FET regulates the flow of current between the source and drain terminals.
• The thin insulating layer that separates the gate from the channel serves as a capacitor. As a result, the capacitance of the gate-channel junction and the gate voltage serves as the gate current's limiting factors.
• The gate is often operated by a voltage source rather than a current source in FET applications.

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