A npn transistor is connected in common emitter configuration in a given amplifier. A load resistance of $$800$$Ω is connected in the collector circuit and the voltage drop across it is $$0.8V$$. If the current amplification factor is $$0.96$$ and the input resistance of the circuit is $$192$$Ω,the voltage gain and the power gain of the amplifier will respectively be

Question

A npn transistor is connected in common emitter configuration in a given amplifier. A load resistance of  $$800$$Ω  is connected in the collector circuit and the voltage drop across it is  $$0.8V$$. If the current amplification factor is $$0.96$$ and the input resistance of the circuit is $$192$$Ω,the voltage gain and the power gain of the amplifier will respectively be

Infinity Learn · Accepted Answer

Here, $$RO=800$$Ω,$$Ri=192$$Ω , current gain, β$$=0.96$$ Voltage gain $$=$$ Current gain × Resistance gain $$=0.96$$×$$800192=4$$ Power gain $$=$$[ Current gain ]×[ Voltage gain ]$$=0.96$$×$$4=3.84$$

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