Home
Class 12
PHYSICS
At what temperature will the resistance ...

At what temperature will the resistance of a copper wire become three times its value at `0^(@)C` (Temperature coefficient of resistance for copper `= 4 xx 10^(-3)` per C)

A

`400^(@) C`

B

`450^(@)C`

C

`500^(@)C`

D

`550^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    ERRORLESS |Exercise Kirchhoff s Law, cells|8 Videos
  • CURRENT ELECTRICITY

    ERRORLESS |Exercise Different Measuring Instruments|1 Videos
  • COMMUNICATION SYSTEM

    ERRORLESS |Exercise S E T|14 Videos
  • ELECTRO MAGNETIC INDUCTION

    ERRORLESS |Exercise SET|20 Videos

Similar Questions

Explore conceptually related problems

At what temperature will the resistannce of a copper wire become three times its value at 0^(@)C (Temperature coefficient of resistance for copper =4xx10^(-3)"per".^(@)C :-

At what temperature(in kelvin) would the resistance of a copper wire be half its resistance at 0^@C ? Temperature coefficient of resistance of copper is 3.9 xx 10^(-3).^(@)C^(-1) .

Out of copper and nichrome, which has the larger value of temperature coefficient of resistance?

Copper and carbon wires are connected in series and the combined resistor is kept at 0^(@)C . Assuming the combined resistance does not vary with temperature the ratio of the resistances of carbon and copper wires at 0^(@)C is (Temperature coefficient of resistivity of copper and carbon respectively are 4xx(10^(-3))/( ^(@)C) and -0.5xx(10^(-3))/( ^(@)C)

The resistance of iron and copper wires at 20^@C are 4.1Omega and 4.3Omega respectively. At what temperature will the resistance be equal ? Temperature coefficient of resistance for iron is 5.0xx10^(-3)K^(-1) and for copper is 4.0xx10^(-3) K^(-1) . Neglect any thermal expansion.

The resistances of an iron wire and a copper wire at 20^(@)C are 3.9(Omega) and 4.1(Omega) respectively. At what temperature will the resistances be equal?Temperature coefficient of resistivity for iron is 5.0xx10^(-3)K^(-1) and for copper it is 4.0xx10^(-3)k^(-1). Neglect any thermal expansion.

(i) At what temperature would the resistance of a copper conductor be double its resistance at 0^(@)C ? (ii) Does this temperature hold for all copper conductors regardles of shape and size ? Given alpha for Cu =3.9xx10^(-3) .^(@)C^(-1) .

A copper coil has resistance of 20.0 Omega at 0^@C and a resistance of 26.4 Omega at 80^@C . Find the temperature coefficient of resistance of copper.

When the resistance of copper wire is 0.1 Omega and the radius is 1mm, then the length of the wire is (specific resistance of copper is 3.14 xx 10^(-8) ohm xx m )

(a) At what temperature would the resistance of a copper conductot be double of its value of 0^(@)C ? (b) Does this same teperautre hold for alll copper conductors, regardless of shape and size? [alpha_(c) = 4.0xx1-0^(-3).^(@)C^(-1)]

ERRORLESS -CURRENT ELECTRICITY-Self Evaluation Test -19
  1. At what temperature will the resistance of a copper wire become three ...

    Text Solution

    |

  2. Figure 6.51 shows a simple a potentiometer circuit for measuring a sma...

    Text Solution

    |

  3. A car has a fresh storage battery of emf 12 V and internal resistance ...

    Text Solution

    |

  4. If the balance point is obtained at the 35th cm in a metre bridge the ...

    Text Solution

    |

  5. The equivalent resistance across the terminals of source of e.m.f. 24 ...

    Text Solution

    |

  6. In the circuit shown in figure, switch S is initially closed and S i...

    Text Solution

    |

  7. The figure here shows a portion of a circuit. What are the magnitude a...

    Text Solution

    |

  8. A carbon resistor has colour strips as violet, yellow brown and golden...

    Text Solution

    |

  9. A voltmeter of resistance 1000 Omega is connected across a resistance ...

    Text Solution

    |

  10. A beam contains 2 xx 10^(8) doubly charged positive ions per cubic cen...

    Text Solution

    |

  11. In the circuit shown, the reading of ammeter when switch S is open ...

    Text Solution

    |

  12. In the circuit as shown in figure the

    Text Solution

    |

  13. In figure shows a rectangular block with dimensions x , 2 x and 4 x ....

    Text Solution

    |

  14. A battery is connected to a uniform resistance wire AB and B is eart...

    Text Solution

    |

  15. A cylindrical metal wire of length l and cross sections area S , has...

    Text Solution

    |

  16. A potential divider is used to give outputs of 4 V and 8 V from a 12 V...

    Text Solution

    |

  17. Find equivalent resistance between A and B

    Text Solution

    |

  18. Following figures show four situations in which positive and negative ...

    Text Solution

    |

  19. A and B are two square plates of same metal and same thickness but len...

    Text Solution

    |

  20. A moving coil galvanometer is converted into an ammeter reads upto 0.0...

    Text Solution

    |

  21. Two conductors are made of the same material and have the same length....

    Text Solution

    |