Home
Class 12
PHYSICS
The current I and voltage V curves for a...

The current I and voltage V curves for a given metallic wire at two different temperatures `T_1 and T_2` are shown in the figure. Then ,

A

`T_1gtT_2`

B

`T_1ltT_2`

C

`T_1=T_2`

D

`T_1=2T_2`

Text Solution

Verified by Experts

The correct Answer is:
`T_1 = 2T_2`
Promotional Banner

Topper's Solved these Questions

  • TEXTUAL QUESTIONS

    MODERN PUBLICATION|Exercise EXERCISE|507 Videos
  • STRUCTURE OF NUCLEUS

    MODERN PUBLICATION|Exercise EXERCISE|47 Videos
  • TEXUAL QUESTIONS

    MODERN PUBLICATION|Exercise EXERCISE|195 Videos

Similar Questions

Explore conceptually related problems

V-I graph for a metallic wire at two different temperatuare T_1 and T_2 is as shown in the following figure. Which of the two temperature T_1 and T_2 is higher and why?

V-I graph for a mettalic wire at two different temperatures T_1 and T_2 is as shown in figure. WHich of the temperatures T_1 and T_2 is higher and why.

The voltage current variation of two metallic wires X and Y at constant temperature are a shown in the figure HQ. 7. Assuming that the wires have the same length and the same diameter explain which of two wires will have larger resistivity.

Two insulating infinitely long wires are lying mutually perpendicular to each other as shown in the figure. If the two wires carry currenst I_1 and I_2 as shown in the figure, find the magnetic field at point P (A,b).

For an ideal gas V - T curves at constant pressure P_(1) & P_(2) are shown in figure, from the figure

If k_1 and k_2 are rate constants at temperatures T_1 and T_2 respectively, then according to Arrhenius equation,

Determine the values of currents I_1, I_2 and I_3 in the network shown in the figure.

Two rods X and Y are of equal lengths. Each rod has its ends at temperature T_1 and T_2 . What is the condition that will ensure equal rate of flow of heat through the rods X and Y?

MODERN PUBLICATION-TEXTUAL QUESTIONS-EXERCISE
  1. The potential difference applied to an X-ray tube is 5 kV and the curr...

    Text Solution

    |

  2. A strip of copper another of germanium are cooled from room temperatur...

    Text Solution

    |

  3. The current I and voltage V curves for a given metallic wire at two di...

    Text Solution

    |

  4. The temperature coefficient of resistance of a wire is 0.00125 per deg...

    Text Solution

    |

  5. How many calories of heat will approximately be developed in a 210 W e...

    Text Solution

    |

  6. A 25 W and a 100 W bulbs are joined in parallel and connected to A.C. ...

    Text Solution

    |

  7. The heating element of a heater should be made with a material, which ...

    Text Solution

    |

  8. Find the ratio of resistances when two heater wires of equal lengths a...

    Text Solution

    |

  9. If two bulbs of wattage 25 and 100 respectively each rated at 220 volt...

    Text Solution

    |

  10. A constant voltage is applied between the two ends of a uniform metall...

    Text Solution

    |

  11. What is immaterial for an electric fuse?

    Text Solution

    |

  12. Six equal resistances are connected between points P,Q and R as shown ...

    Text Solution

    |

  13. A wire of length L and 3 identical cells of negligible internal resist...

    Text Solution

    |

  14. A cell of e.m.f E is connected across a resistance r. The potential di...

    Text Solution

    |

  15. A current of 2.0 A passes through a cell of emf 1.5 V having internal ...

    Text Solution

    |

  16. Five resistance are connected as shown in the figure. The effective re...

    Text Solution

    |

  17. One ampere is equivalent to

    Text Solution

    |

  18. Assuming that the charge of an electron is 1.6 xx 10^-19C, the number ...

    Text Solution

    |

  19. The specific resistance ofo a wire 1.1 m long, 0.4 mm in diameter and ...

    Text Solution

    |

  20. Two copper wires, one of length 1 m and the other of length 9 m, are f...

    Text Solution

    |