Home
Class 12
PHYSICS
For a transistor connected in common emi...

For a transistor connected in common emitter mode , the voltage drop across the collector is 2 V and `beta` is 50 . Find base current if `R_(C)` is 2K .

Text Solution

Verified by Experts

Data supplied ,
`V_(CE) = 2V , beta = 50`
`R_(C) = 2 K = 2 xx 10^(3) Omega`
`I_(C) = (V_(CE))/(R_(C)) = (2)/(2 xx 10^(3)) = 1 mA`
`beta = (I_(C))/(I_(B))`
`I_(B) = (I_(C))/(beta) = (10^(-3))/(50) = 20 mu A`
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS

    NEW JOYTHI PUBLICATION|Exercise SOLUTION TO EXERCISES FROM NCERT TEXT|17 Videos
  • SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS

    NEW JOYTHI PUBLICATION|Exercise PRACTICE PROBLEMS FOR SELF ASSESSMENT|8 Videos
  • RAY OPTICS AND OPTICAL INSTRUMENTS

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|26 Videos
  • WAVE OPTICS

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|17 Videos

Similar Questions

Explore conceptually related problems

For a CE transistor amplifier , the audio signal voltage across the collector resistance of 2.0 k Omega is 2.0 V . Suppose the current amplification factor of the transistor is 100 . What should be the value of R_(R) in series with V_(BB) supply of 2.0V if the dc base current has to be 10 times the signal current . Also calculate then de drop across the collector resistance . Take VBE=0.6V

In p-n-p transistor circuit, the collector current is 10 mA. If 90 % of the holes reach the collector. Find emitter and base currents

In a common emitter transistor amplifier the audio signal voltage across the collector is 3K Omega .If current gain is 100 and the base resistance is 2KOmega , the voltage and power gain of the amplifies is :

For a CE- transistor amplifier , the audio signal voltage across the collected resistance of 2 k Omega is 2 V . Suppose the current amplification factor of the transistor is 100 , find the input signal voltage and base current , if the base is 1 k Omega .

For CE transistor amplifier, the, audio signal voltage across the collector resistance of 2KOmega is 4V. If the current amplification factor of the transistor is 100 and the bas resistance is 1KOmega then the input signal voltage is

The collector supply voltage is 6 V and the voltage drop across a resistor of 600 Omega in the collector circuit is 0.6 V , in a transistor connected in common emitter mode . If the current gain is 20 , the base current is

For a BJT , the common- base current gain alpha=0.98 and the collector base junction reverse bias saturation I_(CO) = 0.6muA . This BJT is connected in the commone emitter mode and operated in the active region with a base drive current I_(B) =20muA . The collector current I_(C) for this of operating is .

A load resistor of 2 k Omega is connected in the collector branch of an amplifier circuit using a transistor in common-emitter mode. The current gain beta=50 .The input resistance of the transistor is 0.50 k Omega . If the input current is changed by 50 mu A ,(a)by what amount does the output voltage change by ,(b)by what amount does the input voltage change and (c) what is the power gain ?

NEW JOYTHI PUBLICATION-SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS -COMPETITIVE EXAM CORNER
  1. For a transistor connected in common emitter mode , the voltage drop a...

    Text Solution

    |

  2. A pure semiconductor has equal electron and hole concentration of 10^(...

    Text Solution

    |

  3. The collector supply voltage is 6 V and the voltage drop across a resi...

    Text Solution

    |

  4. A full - wave rectifier circuit with an ac input is shown. The ou...

    Text Solution

    |

  5. When the voltage drop across a p-n junction diode is increased from 0...

    Text Solution

    |

  6. If the voltage between the terminals A and B is 17 V and Zener breakdo...

    Text Solution

    |

  7. GaAs (with a band gap = 1.5 eV) as a L.E.D can emit

    Text Solution

    |

  8. The circuit diagram shows a logic combination with the states of outpu...

    Text Solution

    |

  9. In a common emitter transistor amplifier , the output resistance is 50...

    Text Solution

    |

  10. In the circuit given , the current through the zener diode is

    Text Solution

    |

  11. A transistor oscillator is (i) an amplifier with positive feedback (ii...

    Text Solution

    |

  12. A semiconductor with a band gap of 2.5 eV is used to fabricate a p-n p...

    Text Solution

    |

  13. In the circuit given A , B and C are inputs and Y is the output T...

    Text Solution

    |

  14. In the given circuits for ideal diode , the current through the batter...

    Text Solution

    |

  15. The logic gates giving output '1' for the inputs of '1' and '0' are

    Text Solution

    |

  16. Identify the mismatch of the following :

    Text Solution

    |

  17. If a PN junction diode of depletion layer width W and barrier height ...

    Text Solution

    |

  18. The heavily and lightly doped regions of a bipolar junction transistor...

    Text Solution

    |

  19. The device used for detecting optical signal is

    Text Solution

    |

  20. The logical operation carried out by the above circuit is

    Text Solution

    |

  21. In CE transistor amplifier , if the base current is increased by 20 mu...

    Text Solution

    |