JFETs are used more often than bipolar transistors to amplify small ac signals because JFETs
A) are less expensive
B) have a much higher voltage gain
C) have very high input impedance
D) have a very low input impedance

Question

Quizplus · Accepted Answer

JFETs (Junction Field-Effect Transistors) are preferred for amplifying small AC signals over bipolar transistors mainly because they have very high input impedance. This high input impedance makes them ideal for applications where it is necessary to minimize the loading effect on the signal source.

JFETs Are Used More Often Than Bipolar Transistors to Amplify