In Input And Output Resistances In A Common-base Amplifier Circuit Are  respectively. If The Current-gain  is 0.98, Then Find The Voltage Gain. If The Emitter-current Is 2 MA, Then Find The Collector-current And The Base-current. 

Why Kaysons ?

Video lectures

Access over 500+ hours of video lectures 24*7, covering complete syllabus for JEE preparation.

Online Support

Practice over 30000+ questions starting from basic level to JEE advance level.

Live Doubt Clearing Session

Ask your doubts live everyday Join our live doubt clearing session conducted by our experts.

National Mock Tests

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

Organized Learning

Proper planning to complete syllabus is the key to get a decent rank in JEE.

Test Series/Daily assignments

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

SPEAK TO COUNSELLOR ? CLICK HERE

Question

In input and output resistances in a common-base amplifier circuit are  respectively. If the current-gain  is 0.98, then find the voltage gain. If the emitter-current is 2 mA, then find the collector-current and the base-current. 

Solution

Correct option is

980, 1.96 mA, 0.04 mA

The voltage gain in a common-base amplifier is  

        

              

              = 980. 

                   

                   = 1.96 mA

  

             

                  

                   = 0.04 mA.

Testing

SIMILAR QUESTIONS

Q1

n-type semiconductor is formed :

Q2

An n-type and a p-type silicon can be obtained by doping pure silicon with : 

Q3

An n-type semiconductor is :

Q4

The drift current in a p-n junction is :

Q5

The diffusion current in a p-n junction is 

Q6

In a p-n-p transistor with normal bias:

Q7

The base-current of a transistor is  and the collector-current is 2.05 mA. A change of  in the base-current produces a change of 0.65 mA in the collector current. Find .  

Q8

The current-gain of a transistor in a common-base arrangement is 0.98. Find the change in collector-current corresponding to a change of 5.0 mA in emitter-current. What would be the change in the base-current?

Q9

In a common-base amplifier the load-resistance of the output circuit is  and the resistance of the input circuit is . If current-gain be 0.95, calculate the voltage-gain and the power gain.

Q10

The a-c current gain  of a transistor is 150. What will be the change in the collector-current for a change of  in its base-current? What will be the change in the emitter-current?