question

(a) draw a circuit diagram of an n-p-n transistor with its emitter-base junction forward biased and base-collector junction reverse biased. briefly describe its working. explain how a transistor in its active state exhibits a low resistance at its emitter-base junction and high resistance at its base-collector junction.

(b) derive the expression for the voltage gain of a transistor amplifier in ce configuration in terms of the load resistance rl, current gain a and input resistance. explain why input and output voltages are in opposite phase

 

 

 

 

 

1024