Question

explain with circuit diagram voltage series amplifier with proper circuit diagram​

Answer 1

Answer:

ANSWER

Voltage gain = it is equal the ratio of small change in output voltage at collector to that of change in input voltage

AV=InputvoltageOutputvoltage

= ΔVEBΔVCE=ΔIBRin(ΔIC)Rout

AV=βAC×RinRout

Where βAC is AC current gain

Relation between input and output  signals of n-p-n transistor amplifier, when positive half cycle is fed into input circuit, forward bais of emitter base circuit decrease, i.e collector current decrease , output voltage.

Vo=VCE−ICRL

Decrease in collector current cause increase of output voltage