Home
Class 12
PHYSICS
In an NPN transistor the collector curre...

In an `NPN` transistor the collector current is `24 mA`. If `80%` of electrons reach collector it base current in `mA` is

A

`36`

B

`26`

C

`16`

D

`6`

Text Solution

Verified by Experts

The correct Answer is:
D

Given `i_(c)=80/10xxi_(c) implies 24=80/100xxi_(c) implies i_(c)=30 mA`
By using `i_(c)=i_(b)+i_(c) implies i_(b) =30-24=6mA`.
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTOR ELECTRONICS

    A2Z|Exercise Digital Electronics|40 Videos
  • SEMICONDUCTOR ELECTRONICS

    A2Z|Exercise Problems Based On Mixed Concepts|32 Videos
  • SEMICONDUCTOR ELECTRONICS

    A2Z|Exercise Diode In Circuits|40 Videos
  • NUCLEAR PHYSICS

    A2Z|Exercise Section D - Chapter End Test|29 Videos
  • SOURCE AND EFFECT OF MAGNETIC FIELD

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

In an NPN transistor the collector current is 10 mA . If 90% of electrons reach collector, the emitter current (i_(E)) and base current (i_(B)) are given by

In NPN transistor the collector current is 10mA . If 90% of electrons emitted reach the collector, the

In a P-N-P transistor, the collector current is 10 mA . If 90% of the holes reach the collector, then emitter current will be :

In an n-p-n circuit transistor, the collector current is 10 mA. If 80% electrons emitted reach the collector, then

In an n-p-n transistor, the collector current is 10 mA. If 90% of the electrons emitted reach the collector, then the emitter current will be

" In an N-P-N transistor,collector current is "10mA" ,if "80%" emitted electrons reach the collector then :- "

In an n-p-n transistor circuit, the collector current is 20 mA. If 90 % of electron emitted reach the collector :-

In an n-p-n transistor circuit, the collector current is 9 mA. If 90% of the electrons emitter reach the collector, find the base current and collector current.

A2Z-SEMICONDUCTOR ELECTRONICS-Junction Transistor
  1. An oscillator is nothing but an amplifier with

    Text Solution

    |

  2. The emitter-base junction of a transistor is .........biased while the...

    Text Solution

    |

  3. In an NPN transistor the collector current is 24 mA. If 80% of electro...

    Text Solution

    |

  4. In the case of constant alpha and beta of a transistor

    Text Solution

    |

  5. Which of the following is true?

    Text Solution

    |

  6. A triode has a plate resistance of 10 k Omega and amplification factor...

    Text Solution

    |

  7. If alpha=0.98 and current through emitter i(e)=20 mA, the value of bet...

    Text Solution

    |

  8. In a PNP transistor working as common-base amplifier, current gain is ...

    Text Solution

    |

  9. If l(1),l(2),l(3) are the lengths of the emitter, base and collector o...

    Text Solution

    |

  10. In an NPN transistor the collector current is 10 mA. If 90% of electro...

    Text Solution

    |

  11. In a common emitter transistor, the current gain is 80. What is the ch...

    Text Solution

    |

  12. Least doped region in a transistor

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  15. For a transistor the parameter beta=99. The value of the parameter alp...

    Text Solution

    |

  16. In a PNP transistor the base is the N-region. Its width relative to th...

    Text Solution

    |

  17. A common emitter amplifier is designed with NPN transistor (alpha=0.99...

    Text Solution

    |

  18. The symbol given in figure represents

    Text Solution

    |

  19. An NPN-transistor circuit is arranged as shown in figure. It is

    Text Solution

    |

  20. The part of a transistor which is heavily doped to produce a large num...

    Text Solution

    |