Home
Class 12
PHYSICS
If a wire of resistance R is melted and ...

If a wire of resistance `R` is melted and recasted in to half of its length, then the new resistance of the wire will be

A

`R/2`

B

R

C

2R

D

`R/4`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • NTA NEET SET 60

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

  • NTA NEET SET 62

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

If a wire of resistance R is melted and recasted to half of its length, then the new resistance of the wire will be

If a uniform wire of resistance R is uniformly strethced to n times the orginal length , then new resistance of the wire becomes

If a wire is stretched to four times its length, then the specific resistance of the wire will

A wire of resistance R is stretched so that its length increases by 10%. The resistance of the wire increases by

A wire of resistance 1 Omega is stretched to double its length. What is the new resistance ?

A wire has a resistance of 16 Omega . It is melted and drawn into a wire of half its length. Calculate the resistance of the new wire. What is the percentage change in its resistance ?

The resistance of a wire is r ohm. If it is melted and stretched to n times its original length , its new resistance will be

NTA MOCK TESTS-NTA NEET SET 61-PHYSICS
  1. A particle of mass m rotates in a circle of radius a with uniform angu...

    Text Solution

    |

  2. The velocity-time graph of a particle moving along a straight line is ...

    Text Solution

    |

  3. If a wire of resistance R is melted and recasted in to half of its len...

    Text Solution

    |

  4. The conducting circular loops of radii R(1) and R(2) are placed in the...

    Text Solution

    |

  5. The magnitude and direction of the electric field at point P can be be...

    Text Solution

    |

  6. Two balls of radius r each are placed at a distance R and released . T...

    Text Solution

    |

  7. A black body of temperature T is inside a chamber of temperature T(0) ...

    Text Solution

    |

  8. For the adiabatic expansion of a perfect monoatomic gas, when volume i...

    Text Solution

    |

  9. A charged particle moving in a uniform magnetic field penetrates a lay...

    Text Solution

    |

  10. A boat which has a speed of 5 km// hr in steel water crosses a river...

    Text Solution

    |

  11. A cyclist turns around a curve at 15 miles/hour. If he turns at double...

    Text Solution

    |

  12. If a simple pendulum oscillates with an amplitude of 50 mm and time pe...

    Text Solution

    |

  13. In photoelectric emission process from a metal of work function 1.8 eV...

    Text Solution

    |

  14. The SI unit of the coefficent of viscosity is

    Text Solution

    |

  15. A ray of light travelling in the direction 1/2 (hati+sqrt(3)hatj) is i...

    Text Solution

    |

  16. A cylinder is rolling down on a inclined plane of inclination60^(@). W...

    Text Solution

    |

  17. A transistor is used as a common emitter amplifier with a load resista...

    Text Solution

    |

  18. A point near the equator has: (H and V are horizontal and vertical com...

    Text Solution

    |

  19. The dimensional formula mu(0)epsilon0 is

    Text Solution

    |

  20. For an interference pattern, the maximum and minimum intensity ratio i...

    Text Solution

    |