In a silicon transistor the base current is changed by `20 mu A`. This results in a change of 0.02 V in the base to emitter voltage and a changed of 2

Monjur Alahi

In a silicon transistor the base current is changed by `20 mu A`. This results in a change of 0.02 V in the base to emitter voltage and a changed of 2 mA in the collector current
(a) Find the input resistance `r_(b),beta_(ac)` and transconductance `g_(m)` of the transistor
(b) The transistor is used as an amplifier with a load resistance of `5 kOmega`. What is the voltage gain of the amplifier ?


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Salim Ahmed Kawsar

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Correct Answer - (a)`r_(b) 1000 Omega beta = 100, g_(m) = 0.1 Omega^(-1)`, (b) `A_(v) = 500`

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