In an $n-p-n$ transistor,in $CE$ configuration:

Three circuit connections of a $PNP$ transistor are given below. Which of the following represents the Common-Emitter configuration?

The phase difference between input and output voltage of a $CE$ circuit is.....$^o$

In the circuit shown,the transistor used has a current gain $\beta = 100$. What should be the base resistor $R_B$ so that $V_{CE} = 5\,V$ and $V_{BE} = 0\,V$?

In the symbol of a transistor,the arrow indicates the direction of:

$A$ transistor is operated in $CE$ configuration at $V_{CC} = 2 \ V$ such that a change in base current from $100 \ \mu A$ to $200 \ \mu A$ produces a change in the collector current from $9 \ mA$ to $16.5 \ mA$. The value of current gain,$\beta$ is .........