English

In a BJT, the largest current flow occurs ______. - Physics

Advertisements
Advertisements

Question

In a BJT, the largest current flow occurs ______.

Options

  • In the emitter

  • In the collector

  • In the base

  • Through CB junction

MCQ
Fill in the Blanks
Advertisements

Solution

In a BJT, the largest current flow occurs in the emitter.

Explanation:

Emitter is a thick, heavily doped layer. This supplies a large number of majority carriers for the current flow through the transistor

shaalaa.com
  Is there an error in this question or solution?
Chapter 16: Semiconductor Devices - Exercises [Page 363]

APPEARS IN

Balbharati Physics [English] Standard 12 Maharashtra State Board
Chapter 16 Semiconductor Devices
Exercises | Q 1.1 | Page 363

RELATED QUESTIONS

Why are the emitter, the base, and the collector of a BJT doped differently?


In a common-base connection, the emitter current is 6.28 mA and the collector current is 6.20 mA. Determine the common-base DC current gain.


Draw the circuit symbol for NPN and PNP transistors. What is the difference in the Emitter, Base, and Collector regions of a transistor? 


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


Describe the function of a transistor as an amplifier with the neat circuit diagram. Sketch the input and output wave forms.


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).


For a transistor, the current ratio 'βdc' is defined as the ratio of ______.


In switching circuit, transistor is in ON state. Values of Iand IB are 5.2 mA and 10 µA respectively and value of RC is 1 k`Omega`. If Vcc is at 5.5 V, then VCE is ______.


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


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


In case of npn transistors, the collector current is always less than the emitter current because ______.


In an npn transistor circuit, the collector current is 10 mA. If 90% of the electrons emitted reach the collector, the emitter current (IE) and base current (IB) are given by ____________.


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


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 ______.


For an ideal diode, the current in the following arrangement 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 ______.


A transistor is used as a common emitter amplifier with a load resistance 2 KΩ. The input resistance is 150 Ω. Base current is changed by 20 µA which results in a change in collector current by 1.5 mA. The voltage gain of the amplifier is ______. 


A conducting wire has length 'L1' and diameter 'd1'. After stretching the same wire length becomes 'L2' and diameter 'd2' The ratio of resistances before and after stretching is ______.


For a transistor,  αdc and βdc are the current ratios, then the value of `(beta_"dc"-delta_"dc")/(alpha_"dc".beta_"dc")` 


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 ______.


The transfer ratio of a transistor is 50. The input resistance of the transistor when used in the CE configuration is 1K Ω. The peak value for an AC input voltage of 0.01 V of collector current is ______.


The collector current in a common-emitter transistor amplifier is 4 mA. When the base current is increased by 20 µA, the collector current increases to 6 mA. The current gain is ______.


Explain the output characteristics of common emitter configuration of n-p-n transistor.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×