The phase difference between input and output | vedclass

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(C) In a common emitter $(CE)$ transistor amplifier,the input signal is applied between the base and emitter,and the output is taken across the collec

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$180$

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(C) In a common emitter $(CE)$ transistor amplifier,the input signal is applied between the base and emitter,and the output is taken across the collector and emitter.When the input signal is in its positive half-cycle,the forward bias of the base-emitter junction increases,leading to an increase in the collector current.This increase in collector current causes a larger voltage drop across the load resistor connected to the collector,resulting in a decrease in the output voltage.Conversely,during the negative half-cycle of the input,the collector current decreases,leading to a smaller voltage drop across the load resistor and an increase in the output voltage.Therefore,the output voltage is $180^o$ out of phase with the input voltage,which corresponds to a phase change of $\pi$ radians.

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

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