Home
Class 9
PHYSICS
The resistance of a wire of length 15.7 ...

The resistance of a wire of length 15.7 m and radius 0.5 mm is `10 Omega`. Find the resistivity of the material of the wire.

Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    NAVNEET PUBLICATION|Exercise EXERCISE|215 Videos
  • LAWS OF MOTION

    NAVNEET PUBLICATION|Exercise EXERCISE|196 Videos

Similar Questions

Explore conceptually related problems

The resistance of a wire of length 31.4 m and diameter 1 mm is 20 Omega . Find the resistivity of the material of the wire.

Find the radius of the wire of length 25 m needed to prepare a coil of resistance 25 Omega . The resistivity of the material of the wire is 3.14 xx10^-7 Ω−m .

Calculate the length of a wire of radius 0.5 mm needed to prepare a coil of resistance 40 Omega . The resistivity of the material of the wire is 3.14 times 10^(-7) Omega-m .

Calculate the length of a wire of diameter 1 mm needed to prepare a coil of resistance 25 ohm. The resistivity of the material of the wire is 3.14 times 10^(-7) Omega.m .

The length of a conducting wire is 50 cm and its radius is 0.5 mm. If its resistance is 30 Omega what is the resistivity of its material?

The length of a conducting wire is 50 cm and its radius is 0.5 mm. If its resistance is 40 Omega what is the resistivity of its material?

A wire has length 10 m and resistance 20 Omega If the resistivity of the material of the wire is 6 times 10^(-7) Omega.m , find the area of cross section of the wire.

Two wires have lengths in the ratio 1:4 and radii in the ratio 1: 2 . The resistivities of the materials of the wires are in the ratio 5: 1 . Compare their resistances.

Two wires have lengths in the ratio 1 : 9 and diameters in the ratio 1: 3 . The resistivities of the materials of the wires are in the ratio 4:1 . Compare their resistances.

Determine the resistance of a copper wire having, a length of 0.1 km and diameter of 0.5 mm. [Given: Resistivity of copper = 1.7 times 10^(-8) Omega m ]

NAVNEET PUBLICATION-CURRENT ELECTRICITY-EXERCISE
  1. A potential difference of 25 V is applied across a conductor of resist...

    Text Solution

    |

  2. The resistance of a conductor is 10 ohm. Find the current through it w...

    Text Solution

    |

  3. The resistance of a wire of length 15.7 m and radius 0.5 mm is 10 Omeg...

    Text Solution

    |

  4. A wire has radius 0.5 mm and length 62.8 m. If the resistivity of the ...

    Text Solution

    |

  5. A wire has length 10 m and resistance 20 Omega If the resistivity of t...

    Text Solution

    |

  6. If the resistance of wire A is three times the resistance of wire B an...

    Text Solution

    |

  7. Calculate the length of a wire of diameter 1 mm needed to prepare a co...

    Text Solution

    |

  8. Two wires have lengths in the ratio 1 : 9 and diameters in the ratio 1...

    Text Solution

    |

  9. A wire of resistance 1000 Omega is uniformly stretched so that its len...

    Text Solution

    |

  10. Find the effective resistance of the series . combination of three res...

    Text Solution

    |

  11. Choose the correct alternative and write it along its allotted alphabe...

    Text Solution

    |

  12. Find the effective resistance of the parallel combination of three res...

    Text Solution

    |

  13. Four resistors of resistances 5 Omega each are connected in parallel. ...

    Text Solution

    |

  14. If two resistors are connected in series, the total resistance is 100 ...

    Text Solution

    |

  15. If two resistors connected in parallel, the effective resistance of th...

    Text Solution

    |

  16. How will you connect three resistors of resistances 3 Omega each to ob...

    Text Solution

    |

  17. How will you connect three resistors (A=2 Omega), (B=3Omega) and (C =6...

    Text Solution

    |

  18. How will you connect three resistors (A=4 Omega), (B=6Omega) and (C=2O...

    Text Solution

    |

  19. Find the effective resistance between A and B.

    Text Solution

    |

  20. Find the effective resistance between A and B.

    Text Solution

    |