Home
Class 12
PHYSICS
For a transistor, working as common emi...

For a transistor, working as common emitter amplifier , the current gain is 45. What will be the current gain when the same transistor is worked as common base amplifier ?

A

9.8

B

0.98

C

0.098

D

0.0098

Text Solution

Verified by Experts

The correct Answer is:
B

`alpha=(beta)/(beta+1)=(45)/(45+1)=(45)/(46)=0.98`
Promotional Banner

Topper's Solved these Questions

  • ROTATIONAL MOTION

    NIKITA PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS|405 Videos
  • STATIONARY WAVES

    NIKITA PUBLICATION|Exercise MCQs|396 Videos

Similar Questions

Explore conceptually related problems

The transistor working as common base amplifier, current gasin is 0.97 and base current is 0.12 mA.

For a common emitter amplifier, current gain is 70 . If the emitter current is 8.4 mA , then the base current is

If a transistor is used in common -emitter mode as an amplifier,then

In a PNP transistor working as common-base amplifier, current gain is 0.96 and current is 7.2 mA . The base current is

In an NPN transistor working as a common base amplifier, current gain is 0.96 and emitter current isb7.2mA .The base current is

For a transistor, in a common emitter arragement, the alternating current gain beta is given by

For a transistor working as common base amplifier, the emitter current is 0.72 mA. The. Current gain is 0.96. The collector current is

For a common-emitter transostor amplifier, the current gain is 60. If the emitter current is 6.6 mA then its base current is

A transistor is used in the common emitter mode as an amplifier . Then

NIKITA PUBLICATION-SEMICONDUCTORS-MCQS
  1. In n-p-n transistor the emitter current will be equal to

    Text Solution

    |

  2. The relationship between alpha and beta is given by

    Text Solution

    |

  3. For a transistor, working as common emitter amplifier , the current g...

    Text Solution

    |

  4. To use a transistor as an amplifier

    Text Solution

    |

  5. The difference in the working of an amplifier and a step up transforme...

    Text Solution

    |

  6. The transistor working as common base amplifier, current gasin is 0.97...

    Text Solution

    |

  7. Which of the following is not a parameter defined for a transistor amp...

    Text Solution

    |

  8. In a silicon transistor, a change of 7.89 mA in the emitter current pr...

    Text Solution

    |

  9. The value of current gain (beta)

    Text Solution

    |

  10. The current gain beta may be defined as, the ratio of change in collec...

    Text Solution

    |

  11. In a transistor , the value of alpha is always

    Text Solution

    |

  12. For a transistor , in a common base arrangement the alternating curren...

    Text Solution

    |

  13. In which of the configuration of a transistor , the power gain is high...

    Text Solution

    |

  14. When npn transistor is used as an amplifler

    Text Solution

    |

  15. In a common emitter amplifier , the input resistance is 200 Omega and ...

    Text Solution

    |

  16. In which of the transistor configurations, the voltage gain is highest...

    Text Solution

    |

  17. In a common emitter amplifier , the input resistance is 1 Omega and lo...

    Text Solution

    |

  18. For a transistor, the current amplification factor is 4. when the tran...

    Text Solution

    |

  19. For a transistor in common emitter configuration, the current amplific...

    Text Solution

    |

  20. For a common emitter configuration , the base current is 60 muA and th...

    Text Solution

    |