The current gain in the common emitter amplifier mode of a transistor is 10 . The input impedance is 20 kΩ and load resistance is 100 kΩ . The power gain is

Step-by-step solution

The power gain is defined as the ratio of change in output power and the change in input power. Since, P = VI . Therefore, Power gain = Current gain X Voltage gain = β × β R out R in = β 2 R out R in Given, β = 10 , R in = 20   kΩ and R out = 100   kΩ . Hence, Power gain = 10 2 100 20 = 100 × 5 = 500