In a common emitter amplifier output resistance is 2000 ohm and input resistance is 5000 ohm. The input signal is of 10 mV and `beta=50`,
Then power gain is

Options

A. 5000 V
B. 5500 V
C. 6250 V
D. 7500 V

Answer

C

Explanation

Voltage gain , `A_v=(DeltaV_0)/(DeltaV_i)=125`
Then power gain,
`A_p = beta xx A_v 50 xx 125 = 6250`