मराठी
महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

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

Advertisements
Advertisements

प्रश्न

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

बेरीज
Advertisements

उत्तर

Current amplification factor, β = `("I"_"c")/("I"_"B") = 15/0.5 = 30`

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 16: Semiconductors Devices - Very Short Answer

संबंधित प्रश्‍न

In a BJT, the largest current flow occurs ______.


Why is the base of a transistor made thin and is lightly doped?


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.


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


The light emitted in an LED is due to


Give the Barkhausen conditions for sustained oscillations.


What is rectification?


Sketch the static characteristics of a common emitter transistor and bring out the essential features of input and output characteristics.


In the circuit shown in the figure, the BJT has a current gain (β) of 50. For an emitter-base voltage VEB = 600 mV, calculate the emitter-collector voltage VEC (in volts).


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


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


Least doped region in a transistor ____________.


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


ln switching circuit, transistor is in ON state and values of IC and IB are 4.2 mA and 5 µA respectively and RC= l k`Omega` and RB= 300 k`Omega`. If VBE = 0.5 V, find the value of VBB.


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


In a transistor, the thickness of the base region ____________.


In a transistor, doping level in base is increased slightly, the collector current and base current respectively ______.


In the case of transistor, the relation between current ratios αdc and βdc is ______.


In common emitter amplifier, a change of 0.2 mA in the base current causes a change of 5 mA in the collector current. If input resistance is 2K `Omega` and voltage gain is 75, the load resistance used in the circuit is ______.


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 ______ 


A common emitter amplifier has a voltage gain of 50, an input impedance of 100Ω and an output impedance of 2000Ω. The power gain of the amplifier is ______.


The reverse bias in a junction diode is changed from 8V to 13V, then the value of the current changes from 40μA to 60μA. The resistance of junction diode will be ______.


The base current in common emitter mode of the transistor changes by 10 µA. If the current gain of the transistor is 50, then change in collector current is ______.


In a CE amplifier, the current gain is 80 and the emitter current is 9 mA. The base current is ______.


Define peak value of alternating signal.


When an n-p-n junction transistor is used as an amplifier in common emitter mode, ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×