Home
Class 12
PHYSICS
In an n-p-n transistor, the collector cu...

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

A

9 mA

B

1 mA

C

2 mA

D

8 mA

Text Solution

Verified by Experts

The correct Answer is:
B
`I_E=10 ` mA
`I_C=90/100xx10`= 9 mA
`therefore I_B=I_E-I_C` 1 mA
Promotional Banner

Topper's Solved these Questions

  • ROTATIONAL MOTION

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP - 3|8 Videos

  • STATIONARY WAVES

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP-8|20 Videos

Similar Questions

Explore conceptually related problems

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

In n-p-n transistor circuit, the collector current is 20 mA. If 90% of the electrons emitted reache the collector, then the

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 circuit, the collector current ia 10 mA. If 90% of the electrons emitted reach the collector.

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.

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

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 :

MARVEL PUBLICATION-SEMICONDUCTORS -MCQs
  1. If for a transistor, beta = 49, then the value of alpha is

    Text Solution

    |

  2. If alpha= 60/61 for a transistor, the value of beta is

    Text Solution

    |

  3. In an n-p-n transistor, the collector current is 10 mA. If 90% of the ...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  6. What is the voltage gain in a common emitter amplifier when the input...

    Text Solution

    |

  7. A transistor connected in CE mode , has a current gain of 50. If the l...

    Text Solution

    |

  8. Three energy levels L1,L2 and L3 of a hydrogen atom correspond to incr...

    Text Solution

    |

  9. In a n-p-n transister circuit the collector current is 9 mA. If 90% of...

    Text Solution

    |

  10. For a transistor, beta = 50. To change the collector current by 350 mu...

    Text Solution

    |

  11. The current gain in the CE mode of a transistor is 10. If the input im...

    Text Solution

    |

  12. When a transistor is operated in the active region, it cannot be used

    Text Solution

    |

  13. For a transistor 1/alpha -1/beta is equal to

    Text Solution

    |

  14. What is the current gain for a transistor used as a common emitter amp...

    Text Solution

    |

  15. The difference in the working of a step up transformer and an amplifie...

    Text Solution

    |

  16. In an oscillator, for sustained oscillations, Barkhausen criterion is ...

    Text Solution

    |

  17. To obtain the current gain (beta) of a transistor, when it is in CE mo...

    Text Solution

    |

  18. The r.m.s. value of the base current ofa transistor is 10muA. What is ...

    Text Solution

    |

  19. When a transistor amplifier having current gain of 75 is given an inpu...

    Text Solution

    |

  20. The input signal given to a CE amplifier having a voltage gain of 150 ...

    Text Solution

    |