The voltage gain of CE amplifier circuit can be approximated for an ideal input ac source and is given by:(a) \({A_{Vs}} = \frac{{r_e'}}{{\left( {{R_C} \times {R_L}} \right)}}\)(b) \({A_{Vs}} = - \frac{{r_e'}}{{{R_C}||{R_L}}}\)(c) \({A_{Vs}} = - \frac{{\left( {{R_C}||{R_L}} \right)}}{{r_e'}}\)(d) \({A_{Vs}} = \frac{{\left( {{R_C} \times {R_L}} \right)}}{{r_e'}}\)Where RL = Load ResistanceRC = Collector Resistancer'e = Effective resistance at the input of transistor from emitter resistance RE

• A. a
• B. b
• C. c
• D. d