Home
Class 12
PHYSICS
In a n-p-n transistor 10^(10) electrons ...

In a `n-p-n` transistor `10^(10)` electrons enter the emitter in `10^(-6)s`. `2%` of the elecrons are lost in the base. The current transfer ratio and the current amplification factor will be

A

`0.98,49`

B

`98,0.49`

C

`0.49,98`

D

`49,0.49`

Text Solution

Verified by Experts

The correct Answer is:
A

`alpha=(I_(C ))/(I_(B))=(0.98)`
`beta=(I_(C ))/(I_(B))=(0.98)/(0.02)=49`
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 an n-p-n transistor 10^(10) electrons enter the emitter in 10^(-6) s. If 2% of the electrons are lost in the base, find the current transfer ratio and the current amplification factor.

In an n-p-n transistor 10^(10) electrons enter the emitter in 10^(-6) s, 3% of the electrons are lost in the base. The current transfer ratio is

In a npn transistor 10^(10) electrons enter the emitter in 10^(–6) s. 4% of the electrons are lost in the base. The current transfer ratio will be

In a transistor 10^(8) electrons enter at the emitter in 10^(-4) s, out of which 2% electron go to the base. The current transfer ratio in common base configuration is

In an NPN transistor 10^(10) electrons enter the emitter in 10^(-6) s and 2 % electrons recombine with holes in base then current gain alpha and beta are

In NPN transistor, 10^(10) electrons enters in emitter region in 10^(-6) sc. If 2% electrons are lost in base region then collector current and current amplification factor (beta) respectively are

In the common emitter configuration of n-p-n transistor 10^(10) electrons enter the emitter in 1 mus and 2% of the electrons are lost of the base. The current gain of the amplifier is

CP SINGH-SEMICONDUCTORS-Exercises
  1. In a transistor, a change of 8.0mA in the emitter current produced a c...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  7. Which of the following is true?

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  12. When npn transistor is used as an amplifler

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  19. Which of the following is correct regarding oscillator?

    Text Solution

    |

  20. The resonce frequency of the tank cuircuit of an oscillator when L=(1)...

    Text Solution

    |