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

Identify the terminals of this $BJT$ and the type of $BJT$ $(NPN$ or $PNP)$. The multimeter is set to diode test mode (indicated by the symbol),and the black probe is connected to the $COM$ port while the red probe is connected to the $V\Omega$ port. Based on the connections shown in the image,determine the terminal configuration (from left to right) and the transistor type.

For a transistor,the current ratio $\alpha_{dc} = \frac{69}{70}$,the current gain $\beta_{dc}$ is

When an $NPN$ transistor is used as an amplifier,which of the following occurs?

For a $CE$ transistor amplifier, the current amplification factor is $59$ and the emitter current is $6.6 \, mA$. Then the base current is

If ${l_1}, {l_2}, {l_3}$ are the lengths of the emitter,base,and collector of a transistor,respectively,then: