An npn transistor operates as a common emitter amplifier with a power gain of 60dB .The input circuit resistance is 100 ohm and the output load resistance is 10000 ohm. The common emitter current gain is?
Jay Saini , 5 Years ago
Grade 12
1 Answers
Mayank
Last Activity: 5 Years ago
we know that power gain = voltage gain * current gain so now current gain = and voltage gain = (* R)/r where R =output load resistance and r=input load resistance so now the power gain =(**R)/r so now numerically we have
60=(**10000)/100 so from here we get *=0.6 and hence =0.77459
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