Home
Class 12
PHYSICS
Resistance of a wire is ROmega. It is st...

Resistance of a wire is R`Omega`. It is stretched uniformly till Its length becomes four times. It's resistivity will ....... .

A

be doubled

B

be four times

C

be half

D

not change

Text Solution

Verified by Experts

The correct Answer is:
D
not change
`Resistivity of wire depends on type of material.
Resistivity of wire of same material is constant.
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    KUMAR PRAKASHAN|Exercise SECTION [D] MULTIPLE CHOICE QUESTIONS (MCQs) (MCQs ASKED IN COMPETITIVE EXAMS)|21 Videos

  • CURRENT ELECTRICITY

    KUMAR PRAKASHAN|Exercise SECTION [D] MULTIPLE CHOICE QUESTIONS (MCQs) (MCQs ASKED IN CBSE-PMT, AIPMT, NEET)|17 Videos

  • CURRENT ELECTRICITY

    KUMAR PRAKASHAN|Exercise SECTION C (LONG ANSWER TYPE QUESTIONS )|5 Videos

  • BOARD'S QUESTION PAPER MARCH-2020

    KUMAR PRAKASHAN|Exercise PART-B SECTION -C|4 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    KUMAR PRAKASHAN|Exercise Section-D (MCQs asked in GUJCET/Board Exam)|1 Videos

Similar Questions

Explore conceptually related problems

The resistance of a wire is R. When this wire is stretched so that its length becomes double, its cross-sectional area becomes half. What will be the resistance of this stretched wire?

Resistance of a fuse wire is ……..and its melting points is ……….

Specific resistance of material of one wire is rho . Its volume is 3 m^(3) and its resistance is 3 Omega . Its length would be ..... .

A conducting wire of length 1 has resistance R. If its length is increased to nl by stretching it uniformly, what would be the new resistance of wire ? (Assume that there is no change in the volume of the wire when it is stretched.)

Two copper wires A and B have the same mass. The resistance of wire A is 0.5 Omega and the length of wire B is double that of wire A. Find the resistance of wire B.

If five equal pieces of a resistance wire having 5 Omega resistance are connected in parallel, their equivalent resistance will be …………… .

The resistance of wire is 10 Omega IF the length of wire is increase by n% the new resistance is 10.2 Omega then n…..

Resistance of wire having diameter 2 mm and length 100 cm is 0.7 Omega , so resistivity of wire = .....

The temperature coefficient of resistance of a wire is 0.00125 per .^oC . At 300K, its resistance is 1 Omega . The resistance of the wire will be 2 Omega at

Resistance of a metal wire of length 1m is 26 Omega" at " 20^@C .If the diameter of the wire is 0.3mm, what will be the resistively fo the metal at that temperature ? Using Table 2 (on page 116), predict the material of the wire.

KUMAR PRAKASHAN-CURRENT ELECTRICITY-SECTION [D] MULTIPLE CHOICE QUESTIONS (MCQs) (MCQs FROM .DARPAN. BASED ON TEXTBOOK)
  1. A solenoid has 50 turns and radius 2 cm, diameter of wire is 2x 10^(-4...

    Text Solution

    |

  2. Resistance or coil at 100^(@)C is 4.2 Omega. If temperature co-efficie...

    Text Solution

    |

  3. Resistance of a wire is ROmega. It is stretched uniformly till Its len...

    Text Solution

    |

  4. Resistivity of ideal conductor and ideal insulator are rho(1) and rho...

    Text Solution

    |

  5. For a conductor, the given Ogure shows the graph of V rarr I for diff...

    Text Solution

    |

  6. For a conducting wire V rarr I graph is as shown in figure given belo...

    Text Solution

    |

  7. Free electron number density in one wire is n, its area of cross-secti...

    Text Solution

    |

  8. A wire has a non-uniform cross-section ai shown In figure. A steady cu...

    Text Solution

    |

  9. Drift velocity of electrons is ....... .

    Text Solution

    |

  10. The arc of cross-section of a metallic conductor is halved. The drift ...

    Text Solution

    |

  11. Drift velocity of holes is ......

    Text Solution

    |

  12. Suppose drift velocity over the entire cross section of a wire is V (...

    Text Solution

    |

  13. Cross-sectional area of silicon slab at 300 K temperature having lengt...

    Text Solution

    |

  14. Drift velocity of electrons is ....... .

    Text Solution

    |

  15. Mobility of electric charge mean., ...... per unit electric field.

    Text Solution

    |

  16. Resistance of conductor increases with increase in temperature because...

    Text Solution

    |

  17. There are three red coloured hands on a carbon resistor. What is its r...

    Text Solution

    |

  18. On a carbon resistor there are bands of colours of our national flag f...

    Text Solution

    |

  19. Which of the following is a unit of mobility ?

    Text Solution

    |

  20. Kirchhoff's first and second law are based ...... .

    Text Solution

    |