What is the phase difference between the input and output voltage for a common-base amplifier?

For a common base configuration of a $PNP$ transistor,$\frac{I_C}{I_E} = 0.96$. Then,the maximum current gain in common emitter configuration will be:

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

In a transistor output characteristic commonly used in common emitter configuration, the base current $I_{B}$, the collector current $I_{C}$, and the collector-emitter voltage $V_{CE}$ have values of the following orders of magnitude in the active region:

In a transistor,the value of $\alpha$ varies between $\frac{20}{21}$ and $\frac{100}{101}$. Then the value of $\beta$ varies between

In a transistor in $CE$ configuration,the ratio of power gain to voltage gain is