In a common emitter transistor transistor amplifier, the audio signal voltage across the collector is `3kOmega`. If current gain is 100 and the base resistance is `2kOmega`, the voltage and power gain of the amplifier are

Options

A. 200 and 1000
B. 15 and 200
C. 150 and 15000
D. 20 and 2000

Answer

C

Explanation

Here, `V_(0)=3V, R_(c)=3xx10^(3)W, beta=100`,
`R_(i)=2xx10^(3)Omega`
Voltage gain, `A_(V)=betaR_/R_(i)`
`=100xx(3xx10^(3))/(2xx10^(3))=150`
Power gain, `A_(P)=A_(V)xxbeta=150xx100`
`=15000`