The main reason that the input resistance of FET amplifiers is so high is that the
A)gate junction is reverse- biased.
B)power supplies used are high voltage/low current.
C)biasing resistors are extremely small.
D)FET junctions are forward- biased and made of germanium.

Question

Quizplus · Accepted Answer

The gate junction in FET (Field Effect Transistor) amplifiers is reverse-biased, which leads to a very small gate current. This results in a high input impedance or resistance, making one of the key advantages of FETs their high input resistance compared to bipolar junction transistors (BJTs).

The Main Reason That the Input Resistance of FET Amplifiers