Home
Class 12
PHYSICS
In an unbiased n-p junction electrons di...

In an unbiased n-p junction electrons diffuse from n-region to p-region because:

A

electrons travel across the junction due to potential difference

B

Only electrons move from n to p region and not the vice-versa .

C

holes in p-region attract them

D

electron concentration in n-region is more as compared to that in p-region

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTOR DEVICES

    AAKASH SERIES|Exercise EXERCISE -I (TRANSISTORS)|24 Videos
  • SEMICONDUCTOR DEVICES

    AAKASH SERIES|Exercise EXERCISE -I (LOGIC GATES)|17 Videos
  • SEMICONDUCTOR DEVICES

    AAKASH SERIES|Exercise EXERCISE -I (ENERGY BANDS AND CLASSIFICATION OF SOLIDS )|43 Videos
  • RAY OPTICS

    AAKASH SERIES|Exercise PROBLEMS ( LEVEL-II)|50 Videos
  • UNITS AND MEASUREMENT

    AAKASH SERIES|Exercise PRACTICE EXERCISE|45 Videos

Similar Questions

Explore conceptually related problems

In an unbiased p-n junction, holes diffuse from the p-region ton-region because (a) free electron in the n-region attract them. (b ) they move across the junction by the potential difference. (c ) hole concentration in p-region is more as compared to n-region. (d ) All the above.

In a p-n junction diode, the depletion region is 400 nm wide and an electric field of 5 xx 10^5 V//m exists in it. The minimum kinetic energy of a conduction electron which can diffuse from n side to p side is

In forward bias in a p-n junction, the potential barrier

AAKASH SERIES-SEMICONDUCTOR DEVICES-EXERCISE -I (P-N JUNCTION DIODE)
  1. In forward biased condition, the p-n junction diode behaves as

    Text Solution

    |

  2. Reverse bias applied to a junction diode

    Text Solution

    |

  3. In the middle of the depletion layer of a reverse biased p-n junction,...

    Text Solution

    |

  4. Avalanche breakdown in a semiconductor diode occurs when

    Text Solution

    |

  5. When a P-n junction diode is reverse biased the flow of current across...

    Text Solution

    |

  6. The small currents in reverse biased condition of p-n diode are due to

    Text Solution

    |

  7. A P-n junction diode can be used as

    Text Solution

    |

  8. A diode as a rectifier converts

    Text Solution

    |

  9. In half-wave rectifier, maximum percentage of A.C. power that can be c...

    Text Solution

    |

  10. In a half-wave rectifier, the load current flows for

    Text Solution

    |

  11. Maximum efficiency of a full-wave rectifier is

    Text Solution

    |

  12. In a full-wave rectifier, the load current flows for

    Text Solution

    |

  13. Zener breakdown occurs

    Text Solution

    |

  14. At breakdown region of a Zener diode, which of the following does not ...

    Text Solution

    |

  15. Zener diode can be used

    Text Solution

    |

  16. In an unbiased n-p junction electrons diffuse from n-region to p-regio...

    Text Solution

    |

  17. LEDS are advantageous over conventional incandescent low power lamps. ...

    Text Solution

    |

  18. The I - V characterisic of an LED is

    Text Solution

    |

  19. In the figure assuming the diodes to be ideal

    Text Solution

    |

  20. The value of the resistor, Rs needed in the dc voltage regulator circu...

    Text Solution

    |