Consider this simple common emitter amplifier (I modeled it in PartSim ... make changes and see the results instantly. Here’s an example: What happens if you change the IC to 0.1 A?
Figure 2 This amplifier circuit produces the distorted waveform in Figure 3. Diode D 1 compensates for the distortion inherent in the npn transistor. The voltage gain of a common-emitter amplifier ...