. An amplifier has the following parameters: input resistance, 470 kΩ; outputresistance, 8.2 kΩ; opencircuit voltage gain 50. A signal source having an e.m.f. of 75μV and negligible internal resistance is connected to the input of the amplifier. Theoutput is connected to a 10 kΩ resistive load. Draw the equivalent circuit and hencedetermine: (a) the output voltage developed across the load; (b) the current gain (c)the voltage gain