Home
Class 12
PHYSICS
How does the conductivity of a semicondu...

How does the conductivity of a semiconductor change with rise in temperature ? Explain.

Text Solution

Verified by Experts

When the temperature of a semiconductor increases , more and more electrons jump from valence band to conduction band (across forhidden gap) .
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS

    NEW JOYTHI PUBLICATION|Exercise CONTINUOUS EVALUATION (ASSIGNMENT)|7 Videos

  • SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS

    NEW JOYTHI PUBLICATION|Exercise PREVIOUS YEAR QUESTIONS|3 Videos

  • SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS

    NEW JOYTHI PUBLICATION|Exercise PRACTICE PROBLEMS FOR SELF ASSESSMENT|8 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|26 Videos

  • WAVE OPTICS

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|17 Videos

Similar Questions

Explore conceptually related problems

Why the resistance of the conductor increases with rise in temperature.

What is the value of conductivity of a semiconductor at absolute zero ?

Resistivity of a semiconductor at room temperature is in the range

How does youngs modulus change with the rise of temperature ?

Explain the variation of resistivity of conductor and semiconductor with change in termperature.

The probability of electrons to be found in the conduction band of an intrinsic semiconductor at a finite temperature

How does the frequency of a tunning fork change, when the temperature is increased?

NEW JOYTHI PUBLICATION-SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS -EVALUATION QUESTIONS AND ANSWER
  1. In the normal working of a transistor , the emitter is forward biased ...

    Text Solution

    |

  2. A transistor is being used as a common emitter amplifier . a What i...

    Text Solution

    |

  3. How does the conductivity of a semiconductor change with rise in tempe...

    Text Solution

    |

  4. Why are Ge and Si semiconductors ?

    Text Solution

    |

  5. Why is a common emitter amplifier preferred over a common base amplifi...

    Text Solution

    |

  6. a . What do you observe when the circuit is closed ? b. What will ha...

    Text Solution

    |

  7. What are the different transistor configurations ?

    Text Solution

    |

  8. Which configuration is widely used in circuits ?

    Text Solution

    |

  9. What is the name of the device in which AC is converted into DC ?

    Text Solution

    |

  10. What is the name of the device in which DC is converted into AC ?

    Text Solution

    |

  11. How can you keep the LC oscillation undamped ?

    Text Solution

    |

  12. What the different gains in a transistor ?

    Text Solution

    |

  13. What is dark current ?

    Text Solution

    |

  14. Transistor Radio does not work satisfactorily when used inside a railw...

    Text Solution

    |

  15. Fill in the blanks with appropriate words given below . [Base , coll...

    Text Solution

    |

  16. A car stereo working at stabilized voltage supply of 9V DC and has a Z...

    Text Solution

    |

  17. State whether true or false and justify . a Zener diodes are used u...

    Text Solution

    |

  18. In both p and n type semiconductors , actually electrons are flowing ....

    Text Solution

    |

  19. A greenhouse has an electronic system (block diagram is given below ) ...

    Text Solution

    |

  20. The behaviour of the control unit of an automatic gas cooker is given ...

    Text Solution

    |