Home
Class 12
PHYSICS
Why are Manganin and Constantan used in ...

Why are Manganin and Constantan used in making resistance coils?

Text Solution

Verified by Experts

The temperature coefficients of resistance of Manganin and Constantan are very small and their resistivity very high. Therefore these materials are used in making resistance coils.
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    SUBHASH PUBLICATION|Exercise TWO MARK QUESTIONS AND ANSWERS|19 Videos

  • CURRENT ELECTRICITY

    SUBHASH PUBLICATION|Exercise THREE MARK QUESTIONS AND ANSWERS|11 Videos

  • COMMUNICATION SYSTEMS

    SUBHASH PUBLICATION|Exercise THREE MARKS QUESTIONS WITH ANSWERS|4 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    SUBHASH PUBLICATION|Exercise NUMERICALS WITH SOLUTIONS|21 Videos

Similar Questions

Explore conceptually related problems

Why are aluminium and copper metals used for making cooking vessels ?

The compound used in making moulds for statues is

Why are manure and fertilizers used in fields?

Draw a graph showing variation of resistivity with temperature of nichrome. Which property of nichrome is used to make standard resistance coils ?

A good resistance coils are made of

What are the uses of an induction coil?

What is the need of using combination of resistance in electrical circuits? Define equivalent resistance.

SUBHASH PUBLICATION-CURRENT ELECTRICITY-NUMERICAL PROBLEMS AND ANSWERS
  1. Why are Manganin and Constantan used in making resistance coils?

    Text Solution

    |

  2. In the given circuit, calculate the effective resistance between A and...

    Text Solution

    |

  3. In the given circuit, calculate the current through the circuit when c...

    Text Solution

    |

  4. In the given circuit, calculate the current through 3Omega resistor, w...

    Text Solution

    |

  5. A battery of internal resistance 3Omega is connected to 20Omega resist...

    Text Solution

    |

  6. A network of resistors is connected to a 12V battery as shown in the f...

    Text Solution

    |

  7. A network of resistors is connected to a 12V battery as shown in the f...

    Text Solution

    |

  8. Two cells of emf 2V and 4V and internal resistance 1Omega and 2Omega r...

    Text Solution

    |

  9. Which two resistors are connected in series with a cell of emf 2V and ...

    Text Solution

    |

  10. Two resistors of resistances 2Omega and 4Omega are connected in parall...

    Text Solution

    |

  11. Three equal resistors connected in series across a source of emf of ne...

    Text Solution

    |

  12. A copper wire has 3xx 10^(22) free electrons in 0.021 m length. The dr...

    Text Solution

    |

  13. A copper wire has 3xx 10^(22) free electrons in 0.021 m length. The dr...

    Text Solution

    |

  14. A cube of side 0.05 m of a material of conductor is drawn into a wire ...

    Text Solution

    |

  15. If the number density of electrons in a conductor is 3 xx10^(28) and t...

    Text Solution

    |

  16. Two resistors 10Omega and 25Omega are connected in series and the comb...

    Text Solution

    |

  17. Four resistors of resistances 2Omega, 1Omega, 3Omega, 4Omega are arran...

    Text Solution

    |

  18. ABCD forms the four arms of a Wheatstone's network. The arms AB, BC, C...

    Text Solution

    |

  19. A battery of emf 10V and internal resistance 3Omega is connected to a ...

    Text Solution

    |

  20. Three resistors 2Omega, 4Omega and 5Omega are connected in parallel. W...

    Text Solution

    |

  21. Three resistors 2Omega, 4Omega and 5Omega are connected in parallel.If...

    Text Solution

    |