Home
Class 12
PHYSICS
In a transistor, a change of 8.0mA in th...

In a transistor, a change of `8.0mA` in the emitter current produced a charge of `7.9mA` in the collector current. The base current changes by

A

`1muA`

B

`10muA`

C

`100muA`

D

`1000muA`

Text Solution

Verified by Experts

The correct Answer is:
C
`I_(E)=I_(B)+I_(C )`
`DeltaI_(E)=DeltaI_(B)+DeltaI_(c )`
`8=DeltaI_(B)+7.9`
`DeltaI_(B)=0.1 mA=0.1xx10^(-3)A=10^(-4)A =100xx10^(-6)A=100muA`
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTORS

    CP SINGH|Exercise Exercises|140 Videos

  • REFRACTION OF LIGHT BY PLANE SURFACES

    CP SINGH|Exercise Exercises|110 Videos

  • THERMAL AND ELECTRIC EFFECT oF CURRENT

    CP SINGH|Exercise Exercises|101 Videos

Similar Questions

Explore conceptually related problems

In a silicon transistor, a change of 8.0 mA in the emitter current produces a change of 7.9 mA in the collector current. What change in the base current is necessary to produce an equivalent change in collector current?

In transistor, a change of 8.0 mA in the emitter current produces a change of 7.8 mA in the collector current. What change in the base current is necessary to produce the same change in the collector current ?

In a silicon transistor, a change of 7.89 mA in the emitter current produce a change of 7.8 mA in the collector current. What change in the base current is necessary to produce an equivalent change in the collector current?

In a silicon transistor, a change of 80mA emitter current produces a change of 7.9mA in the collector current. What change in the base current is necessary to produce an equivalent change in the collector current? Find the values of alpha and beta .

A charge of 8.0 mA in the emitter current brings a charge of 7.9 mA in the collector current. The values of alpha and beta are

A change of 8mA in the emitter current brings a change if 7.9 mA in the collector current. The change in base current required to have the same change in the collector is

For a germanimu tansistor the change of 9 mA in emitter current produces a change of 8.8 mA in collector produce an equivalent change in base current

CP SINGH-SEMICONDUCTORS-Exercises
  1. In NPN transistor the collector current is 10mA. If 90% of electrons e...

    Text Solution

    |

  2. In the study of transistors as an amplifier, if alpha=I(c)//I(c) and b...

    Text Solution

    |

  3. In a transistor, a change of 8.0mA in the emitter current produced a c...

    Text Solution

    |

  4. The current gain of a transistor in a common base arrangement in 0.9...

    Text Solution

    |

  5. In a n-p-n transistor 10^(10) electrons enter the emitter in 10^(-6)s....

    Text Solution

    |

  6. A transistor is operetaed in common-emitter configuration at V(c)=2V s...

    Text Solution

    |

  7. The transfer ration of a transistor is 50. The input resistance of th...

    Text Solution

    |

  8. For a common base configuration of PNP transistor (l(C))/(l(E))=0.98, ...

    Text Solution

    |

  9. Which of the following is true?

    Text Solution

    |

  10. In a common base ampifier , the phase difference between the input sig...

    Text Solution

    |

  11. In the CB mode of a transistor, when the collector voltage is changed ...

    Text Solution

    |

  12. In a transistor circuit shown here the base current is 35 muA. The val...

    Text Solution

    |

  13. The transistors provide good power amplification when they are used in

    Text Solution

    |

  14. When npn transistor is used as an amplifler

    Text Solution

    |

  15. A common emitter amplifier has a voltage gain of 50, an input impedenc...

    Text Solution

    |

  16. In a CE transistor amplifier, the audio signal voltage across the coll...

    Text Solution

    |

  17. The input resistance of a common emitter transistor amplifer, if the o...

    Text Solution

    |

  18. In the following common emitter configuration an NPN transistor with c...

    Text Solution

    |

  19. A transistor is connected in common emmitter (CE) configuration. The c...

    Text Solution

    |

  20. In the cuircuit shown here the transistor used has a current gain beta...

    Text Solution

    |