A non transistor operates as a common emitter amplifier, with a power gain of 60 dB. The input circuit resistance is `100 Omega` and the output load resistance is `10 k Omega`. The common emitter current gain `beta` is:

Explanation

Power gain `=60=10log ((P_(0))/(P_(i)))`
`implies6=log((P_(0))/(P_(i)))`
`implies(P_(0))/(P_(i))=10^(6)`
`=beta^(2)((R_("out"))/(R_("in")))`
`implies10^(6)=beta^(2)=(10000/100)`
[as `R_("out")=10,000wR_("in")=100w]`
`impliesbeta=100`