7.91 In this problem, we investigate the effect of changing the bias current I C on the overall voltage gain Gv of a CE amplifier. Consider the situation of a CE amplifier operating with a signal source having Rsig = 10 k and having RC||RL = 10 k. The BJT is specified to have β = 100 and VA = 25 V. Use Eq. (7.114) (with ro included in parallel with RC and RL in the numerator) to find Gv at IC = 0.1 mA, 0.2 mA, 0.5 mA, 1.0 mA, and 1.25 mA. Observe the effect of ro on limiting G v as I C is increased. Find the value of IC that results in G v = 50 V/V.