In a common emitter configuration with suitable bias, it is given that R_L is the load resistance and R_BE is small signal dynamic resistance (input…

In a common emitter configuration with suitable bias, it is given that $\displaystyle \mathrm{R}_{\mathrm{L}}$ is the load resistance and $\displaystyle \mathrm{R}_{\mathrm{BE}}$ is small signal dynamic resistance (input side). Then, voltage gain, current gain and power gain are given, respectively, by : $\displaystyle \beta$ is current gain, $\displaystyle \mathrm{I}_{\mathrm{B}}, \mathrm{I}_{\mathrm{C}}$ and $\displaystyle \mathrm{I}_{\mathrm{E}}$ are respectively base, collector and emitter currents.