A common emitter amplifier has a voltage gain of `50`, an input impedence of `100 Omega` and an output impedence of `200 Omega`. The power gain of the of the amplifier is

Options

A. `500`
B. `1000`
C. `1250`
D. `100`

Answer

C

Explanation

`A_(v)=beta(R_(L))/(R_(in))`
`50=betaxx(200)/(100)impliesbeta=25`
`A_(p)=beta^(2)(R_(L))/(R_(I n))=(25)^(2)xx(200)/(100)=1250`