For a transistor,$\beta = 100$. The value of $\alpha$ is

In a common emitter amplifier,the input signal is applied across

$A$ transistor is used as a common emitter amplifier with a load resistance $2 \ k\Omega$. The input resistance is $150 \ \Omega$. The base current is changed by $20 \ \mu A$,which results in a change in collector current by $1.5 \ mA$. The voltage gain of the amplifier is

For a given transistor,if $\alpha = 0.95$,find the common emitter current gain $\beta$.

In which section of a transistor is the doping concentration highest to produce a large number of majority charge carriers?

In a $P-N-P$ transistor,the emitter has ....... as majority carriers and the base has ....... as majority carriers.