7.117 Calculate the overall voltage gain G, of a common-source amplifier for which g = 5 mA/V, r =50 kohms, R, = 10 kohms, and Rg1||Rg2 = 10 M ohms . The amplifier is fed from a signal source with a Thé venin resistance of 1 Mohms,and the amplifier output is coupled to a load resistance of 20 kohms