Q2. Consider a linear voltage amplifier with parameters, Av, $R_i$ and $R_o$ respectively, with the symbols have their usual meaning. The amplifier is driven by a voltage source of internal resistance, $R_s$, and terminated by a load of resistance, $R_L$.
(i) Write down expressions for the voltage, current and power gains, referenced to the source, for general settings of the parameters.
(ii) Adapt your expressions if the amplifier is ideal.
(iii) Adapt your expressions if only the input behaviour is ideal.
(iv) Adapt your expressions if only the output behaviour is ideal.
(v) Adapt your expressions if the amplifier has non-ideal input and output behaviour, but is driven by an ideal source.
(vi) Adapt your expressions if the amplifier has non-ideal input and output behaviour, is driven by a non-ideal source, and is on open circuit at the output