हिंदी

The common-base DC current gain of a transistor is 0.967. If the emitter current is 10mA. What is the value of base current? - Physics

Advertisements
Advertisements

प्रश्न

The common-base DC current gain of a transistor is 0.967. If the emitter current is 10mA. What is the value of base current?

संख्यात्मक

उत्तर

Given:

Current gain (α) = 0.967

Emitter current = 10mA

To Find:

The value of base current of the transistor =?

Solution:

  • The common gain DC current us is given by
    α = 0.967 = `"I"_"C"/"I"_"E"="I"_"C"/10`
    IC = 0.967 × 10
    IC = 9.67mA
  • The base current of the transistor is given by the formula
    IE = IB + IC
    10 = IB + 9.67
    IB = 0.33mA

The value of base current of the transistor is 0.33mA

shaalaa.com
Bipolar Junction Transistor (BJT)
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 16: Semiconductor Devices - Exercises [पृष्ठ ३६४]

APPEARS IN

बालभारती Physics [English] 12 Standard HSC Maharashtra State Board
अध्याय 16 Semiconductor Devices
Exercises | Q 18 | पृष्ठ ३६४

संबंधित प्रश्न

In a BJT, the largest current flow occurs ______.


In a common-base connection, a certain transistor has an emitter current of 10mA and a collector current of 9.8 mA. Calculate the value of the base current.


Derive the relation between α and β.


Which method of biasing is used for operating a transistor as an amplifier?


In a common base configuration, the transistor has an emitter current of 10 mA and a collector current of 9.8 mA. The value of base current is ______ 


For a transistor β =75 and IE = 7.5 mA. The value of α is ______ 


Draw the circuit symbol of the PNP transistor. 


For a transistor IC = 15 mA, IB = 0.5 mA. What is the current amplification factor?  


With the help of a neat diagram, explain the working of the npn transistor?  


With the help of a neat circuit diagram, explain the transistor as an amplifier? 


The principle based on which a solar cell operates is ____________.


Give the Barkhausen conditions for sustained oscillations.


Transistor functions as a switch. Explain.


Assuming VCEsat = 0.2 V and β = 50, find the minimum base current (IB) required to drive the transistor given in the figure to saturation.


In a common emitter amplifier, the input resistance is 1000 Ω, the peak value of Input signal voltage is 5 mV, and β = 60. The peak value of output current is


In the symbol for a transistor, the arrow head points in the direction of the ____________. 


In the study of transistor as an amplifier, the ratio of collector current to emitter current is 0.98 then the ratio of collector current to base current will be ______.


If `alpha`-current gain of a transistor is 0.98. What is the value of `beta`- current gain of the transistor?


In an npn transistor, the collector current is 24 mA. If 80% of electrons reach collector, its base current in mA is ______.


In a transistor in CE configuration, the ratio of power gain to voltage gain is ____________.


Which of the following regions of a transistors are, respectively, heavily dopped and lightly dopped?


In a common emitter amplifier circuit using an n-p-n transistor, the phase difference between the input and the output voltages will be: ____________.


For a common emitter configuration, if 'α' and 'β' have their usual meanings, the correct relationship between 'α' and 'β' is ______.


A transistor when connected in common emitter mode has a ____________.


A pnp transistor is used in common-emitter mode. If a change of 40 µA in base current brings a change of 2 µA in collector current with 0.04 V in base-emitter voltage, then the input resistance is ____________.


In transistor amplifier, base-emitter junction is forward biased and collector emitter junction is reverse biased. The current gain is ______.


A change of 9.0 mA in the emitter current brings a change of 8.9 mA in the collector current. The value of current gain β will be ______.


In a study of transistor as an amplifier, the ratio of collector current to emitter current is 0.98. The collector current is 3mA, then base current will be approximately ______.


A transistor having α = 0.8 is connected in a common emitter configuration. When the base current changes by 6 mA, the change in collector current is ______ 


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×