Question

Phase difference between input and output voltage in common base transistor amplifier

Answer 1

The INPUT is what sort of electrical system you need to supply to the adapter (i.e. what your power company supplies). The OUTPUT is what is supplied to your device. Note that he amount of DC electrical power is calculated by multiplying the current by the voltage (P=I. · V).

Answer 2

Phase difference between input and output of common base amplifier;                                                                ]                                                                                                                              

If it is the normal audio frequency range, there is no phase shift between the input and the output. So, increasing current at the input gives rise to increasing output current . A decreasing input gives a decreasing output current. Hence, phase difference is zero.