Home
Class 11
PHYSICS
When npn transistor is used as an ampli...

When npn transistor is used as an amplifler

A

electrons move from base to collector

B

holes move from emitter to base

C

electrons move from collector to base

D

holes move from base to emitter

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTORS

    ALLEN |Exercise Part-3(Exercise-3)|27 Videos
  • PHYSICAL WORLD, UNITS AND DIMENSIONS & ERRORS IN MEASUREMENT

    ALLEN |Exercise EXERCISE-IV|7 Videos
  • WAVES AND OSCILLATIONS

    ALLEN |Exercise Part-1(Exercise-05)[B]|42 Videos

Similar Questions

Explore conceptually related problems

Transistor can be used as :-

A npn transistor conducts when

Statement-I : For faster action, n-p-n transistor is used Statement-II : In n-p-n transistor, the mobility of majority charge carries is more.

In the cuircuit shown here the transistor used has a current gain beta=100 . What should be the bias resistor R_(BE) so that V_(CE)=5V("neglect "V_(BE))

When is the unit of ppm used ?

In a common emitter amplifier circuit using a n-p-n transistor, the phase difference between the input and the output voltages will be ……..

Consider an n-p-n transistor amplifer in common-emitter configuration. The current gain of the transistor is 100 . If the collector current changes by 1mA , what will be the change in emitter current?

In the following common emitter configuration an NPN transistor with current gain beta=100 is used. The output voltage of the amlifier will be

In npn transistor circuit, the collector current us 10 mA. If 95 % of the electrons emitted reach the collector what is the free current ?

The thinest part of a transistor is

ALLEN -SEMICONDUCTORS-Part-3(Exercise-4)
  1. In the middle of the electron layer of a reverse biased p-n junction, ...

    Text Solution

    |

  2. Consider telecommunication through optical fibres. Which of the follow...

    Text Solution

    |

  3. When npn transistor is used as an amplifler

    Text Solution

    |

  4. For a transistor ampliflier in common emiter configuration for load im...

    Text Solution

    |

  5. A piece of copper and another of germanium are cooled from room temper...

    Text Solution

    |

  6. When p-n junction diode is forward biased ………

    Text Solution

    |

  7. The electrical conductivity of a semiconductor of a semiconductor incr...

    Text Solution

    |

  8. In a common emitter amplifier circuit using a n-p-n transistor, the ph...

    Text Solution

    |

  9. In a full wave rectifier circuit operating from 50 Hz mains frequency...

    Text Solution

    |

  10. In a common base mode of a transition , the collector current is 5.48...

    Text Solution

    |

  11. A solid which is transparent to visible light an whose conductivity in...

    Text Solution

    |

  12. Ratio of number density of holes is (7)/(5) and ratio of their current...

    Text Solution

    |

  13. The circuit has two oppsitely ideal diodes in parallel. What is the cu...

    Text Solution

    |

  14. In the following, which one of the diodes is reverse biased ?

    Text Solution

    |

  15. If the lattice constant of this semiconductor is decreased, then which...

    Text Solution

    |

  16. Carbon, silicon and germanium have four valence electrons each. At roo...

    Text Solution

    |

  17. If a p-n junction diode, a square input signal of 10 V is applied as s...

    Text Solution

    |

  18. A working transitor with its three legs marked P, Q and R is tested us...

    Text Solution

    |

  19. In the circuit below, A and B represents two inputs and C represents t...

    Text Solution

    |

  20. a p -n juction (D) shown in the figure can act an a rectifier An alter...

    Text Solution

    |