A common emitter amplifier has a voltage gain of 50 an input impedance of 100 ohm and an output impedance 200 ohm the power gain is . The formula is Ap=B^2Rl/Ri Share with your friends Share 2 Vaibhav T. answered this Dear Student, power gain=Av2×RiRopower gain=502×100200=1250 11 View Full Answer Moyukh Chakrabarti answered this Dont know -4