Home
Class 12
PHYSICS
Write an expression for the resistivity ...

Write an expression for the resistivity of a metallic conductor showing its variation over a limited range of temperatures.

Text Solution

Verified by Experts

`rho_T = rho_0 [1 + alpha (T - T_0) ]` . where a is the temperature coefficient of resistivity.
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    U-LIKE SERIES|Exercise SHORT ANSWER QUESTIONS|42 Videos

  • CURRENT ELECTRICITY

    U-LIKE SERIES|Exercise LONG ANSWER QUESTIONS - I|47 Videos

  • CURRENT ELECTRICITY

    U-LIKE SERIES|Exercise ASSERTION-REASON TYPE QUESTIONS|5 Videos

  • CBSE SAMPLE QUESTION PAPER 2019-20 (SOLVED)

    U-LIKE SERIES|Exercise SECTION D|6 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    U-LIKE SERIES|Exercise SELF ASSESSMENT TEST SECTION-C (VERY SHORT ANSWER QUESTIONS)|3 Videos

Similar Questions

Explore conceptually related problems

The resistance of a metallic conductor increases with temperature due to.

The resistance of a conductor depends on its

How does the conductivity of a metallic conductor vary with temperature?

When the temperature of a metallic conductor is increased, its resistance

U-LIKE SERIES-CURRENT ELECTRICITY -VERY SHORT ANSWER QUESTIONS
  1. Two wires of equal length, one of copper and the other of manganin hav...

    Text Solution

    |

  2. Nichrome and copper wires of same length and same radius are connected...

    Text Solution

    |

  3. Write an expression for the resistivity of a metallic conductor showin...

    Text Solution

    |

  4. Why are alloys, manganin and constantan used to make standard resistan...

    Text Solution

    |

  5. When electrons drift in a metal from lower to higher potential, does i...

    Text Solution

    |

  6. How does the random motion of free electrons in a conductor get affect...

    Text Solution

    |

  7. Define the term ‘Mobility' of charge carriers in a conductor. Write it...

    Text Solution

    |

  8. How does the mobility of electrons in a conductor change, if the poten...

    Text Solution

    |

  9. Two identical slabs, of a given metal, are joined together, in two di...

    Text Solution

    |

  10. A carbon resistor is shown in the Fig. Using colour code, write the va...

    Text Solution

    |

  11. The three coloured bands on a carbon resistor are red, green and yello...

    Text Solution

    |

  12. Two students A and B were asked to pick a resistor of 15 kW from a col...

    Text Solution

    |

  13. Graph showing the variation of current versus voltage for a material ...

    Text Solution

    |

  14. Two identical cells, each of emf epsi , having negligible internal res...

    Text Solution

    |

  15. In a metre bridge, two unknown resistances R and S, when connected in ...

    Text Solution

    |

  16. In an experiment on metre bridge the balancing length on wire is 'l'. ...

    Text Solution

    |

  17. What is the effect of interchanging the position of cell and galvanome...

    Text Solution

    |

  18. Why are the connections between resistors in a metre bridge made of th...

    Text Solution

    |

  19. Why is it generally preferred to obtain balance point near the middle ...

    Text Solution

    |

  20. Why is a potentiometer preferred over a voltmeter for measuring the em...

    Text Solution

    |