Three amplifiers,each having a voltage gain of $10$,are connected in series. The resultant gain would be

The base current in a transistor circuit changes from $45 \mu A$ to $140 \mu A$. Accordingly, the collector current changes from $0.2 \text{ mA}$ to $4.0 \text{ mA}$. The gain in current is

An $n-p-n$ transistor is biased to work as an amplifier. Which of the following statements is $NOT$ correct?

The voltage gain and current gain of a transistor amplifier in common emitter configuration are respectively $150$ and $50$. If the resistance in the base circuit is $850 \Omega$, then the resistance in the collector circuit is: (in $\Omega$)

In the study of a transistor as an amplifier,if $\alpha = \frac{I_{C}}{I_{E}}$ and $\beta = \frac{I_{C}}{I_{B}}$,where $I_{C}$,$I_{B}$,and $I_{E}$ are the collector,base,and emitter currents respectively,then:

In a common emitter transistor amplifier, $AC$ current gain is $65$, the load resistance is $5400 \text{ }\Omega$ and input resistance of the transistor is $450 \text{ }\Omega$. The voltage gain is