Home
Class 12
PHYSICS
Lets npand ne be the number of holes and...

Lets `n_p`and `n_e` be the number of holes and conduction electrons in an extrinsic semiconductor.

A

`n_(p)gtn_(e)`

B

`n_(p)=n_(e)`

C

`n_(p) lt n_(e)`

D

`n_(p)nen_(e)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTORS

    RESONANCE ENGLISH|Exercise Exercise 2|16 Videos
  • SEMICONDUCTORS

    RESONANCE ENGLISH|Exercise Exercise 3|88 Videos
  • SEMICONDUCTORS

    RESONANCE ENGLISH|Exercise Exercise 3|88 Videos
  • REVISION DPP

    RESONANCE ENGLISH|Exercise All Questions|463 Videos
  • SIMPLE HARMONIC MOTION

    RESONANCE ENGLISH|Exercise Advanced Level Problems|13 Videos

Similar Questions

Explore conceptually related problems

Lets n_p and n_e be the number of holes and conduction electrons in an intrinsic semiconductor.

n-type semiconductor is

A N - type semiconductor is

We have valence electrons and conduction electrons in a semiconductor. Do we also have "valence holes" and "conduction holes"?

Let n(A)=p. Then the number of all relations on A is

Let (Delta)E denote the energy gap between the valence band and the conduction band.The population of conduction electrons (and of the holes)is roughly proportional to e^(-Delta E//2kT). Find the ratio of the concentration of conduction electrons in diamond to that in silicon at room tempareture 300K. (Delta E) for silicon is 1.1 ev and for diamond is 6.0eV.How many conduction electrons are likely to be in one cubic meter of diamond ?

Let n(A) = n, then the number of all relations on A, is

What are n-type semiconductors ?

The electron concentration in an n-type semiconductor is the same as hole concentration in a p-type semiconductor. An eternal field (electric) is applied across each of them. Compare the currents in them (1) current in p-type>current in n-type (2) current in n-type>current in p-type (3) No current will flow in p-type, current will only flow in n-type (4) current in n-type=current in p-type

The electron concentration in an n-type semiconductor is the same as hole concentration in a p-type semiconductor. An eternal field (electric) is applied across each of them. Compare the currents in them (1) current in p-type>current in n-type (2) current in n-type>current in p-type (3) No current will flow in p-type, current will only flow in n-type (4) current in n-type=current in p-type

RESONANCE ENGLISH-SEMICONDUCTORS-Exercise
  1. The electrical conductivity of pure germanium can be increased by

    Text Solution

    |

  2. n-type semiconductors are

    Text Solution

    |

  3. Lets npand ne be the number of holes and conduction electrons in an ex...

    Text Solution

    |

  4. A semiconductor is doped with a donor impurity

    Text Solution

    |

  5. A p-type semoconductor has acceptor levels 57meV above the valence ban...

    Text Solution

    |

  6. Which of the following energy bank diagram shows the N-type semiconduc...

    Text Solution

    |

  7. A P-type sillicon semiconductor is made by adding one atom of indium p...

    Text Solution

    |

  8. When n-type of semiconductor is heated

    Text Solution

    |

  9. GaAs is-

    Text Solution

    |

  10. What will be conductance of pure sillicon crystal at 300 K temp? if el...

    Text Solution

    |

  11. Forbidden energy gap of Ge is 0.75eV, maximum wave length of incident ...

    Text Solution

    |

  12. Mobility of electron in N-type Ge is 5000 cm^(2)//"volt" sec and condu...

    Text Solution

    |

  13. The intrinsic carrier density in germanium crystal at 300 K is 2.5xx10...

    Text Solution

    |

  14. Pure Si at 300 K has equal electron (ne) and hole (n(h)) concentration...

    Text Solution

    |

  15. The length of a germanium rod is 0.58 cm and its area of cross-section...

    Text Solution

    |

  16. The contrinution in the total current flowing through a semiconductor ...

    Text Solution

    |

  17. p-n junction is

    Text Solution

    |

  18. Diffusion current in a p-n junction is greater than the drift current ...

    Text Solution

    |

  19. In a p-n junction diode, change in temperature due to heating

    Text Solution

    |

  20. A hole diffuses from the p-side to the n-side in a p-n junction.This m...

    Text Solution

    |