Home
Class 9
PHYSICS
The resistance of a 1m long nichrome wir...

The resistance of a 1m long nichrome wire is `6 Omega`. If we reduce the length of the wire to 70 cm, what will its resistance be?

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 copper wire is 20 Omega at 0^@C . Find the resistance at 60^@C if the temperature coefficient of resistance of material is 0.004//^@C .

The resistance of a potentiometer wire is 10 Omega and its length is 10 meter. A resistance box and 2 V accumulator are placed in series with it. What should be the value of resistance in the box if it is desired to have potential drop of 1muV /mm?

The resistance of a potentiometer wire is 8 Omega and its length is 8 m. A resistance box and a 2V battery are connected in series with it. What should be the resistance in the box, if it is desired to have a potential drop of 1muV//mm ?.

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.

The e.m.f. of a cell is balanced by fall of potential along 281 cm of potentiometer wire. If a resistance of 8 Omega is connected across the cell , the balancing length is found to be 151 cm. Calculate internal resistance of a cell.

The potential gradient along the length of uniform wire is 10" Vm"^(-1) . The length of the wire is 1 m. What is the potential difference across two points on the wire separated by 25 cm?

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.

Choose correct alternative. A wire of length 20 cm has resistance 5 Omega . It is stretched up to 60 cm, its resistance will be

A wire of resistance 100 Omega is uniformly stretched until its length increases by 5% . What will be its resistance after stretching? Assume that the volume of the wire remains the same when it is stretched.

NAVNEET PUBLICATION-CURRENT ELECTRICITY-EXERCISE
  1. The resistance of a 1m long nichrome wire is 6 Omega. If we reduce the...

    Text Solution

    |

  2. Fill in the blanks: The coulomb is the SI unit of………….

    Text Solution

    |

  3. Fill in the blanks: The ampere is the SI unit of………

    Text Solution

    |

  4. Fill in the blanks: The ohm is the SI unit of………..

    Text Solution

    |

  5. Fill in the blanks: The SI unit of electric potential difference is t...

    Text Solution

    |

  6. Fill in the blanks: The SI unit of electric power is the …………..

    Text Solution

    |

  7. Fill in the blanks: 1 volt=………../1 coulomb.

    Text Solution

    |

  8. Fill in the blanks: 1 ampere=………./1 second.

    Text Solution

    |

  9. Fill in the blanks: ……….=1 joule per second.

    Text Solution

    |

  10. Fill in the blanks: 1 ohm =………./1ampere.

    Text Solution

    |

  11. Fill in the blanks: 1mA=………..A.

    Text Solution

    |

  12. Fill in the blanks: Resistance =……………/electric current.

    Text Solution

    |

  13. Fill in the blanks: 1 microvolt=………volt.

    Text Solution

    |

  14. Fill in the blanks: The electrical work done when a current of 0.1 A...

    Text Solution

    |

  15. Fill in the blanks: To increase the effective resistance in a circuit...

    Text Solution

    |

  16. Fill in the blanks: The potential difference between the terminals of...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  20. Choose the correct alternati e and write it along its allotted alphabe...

    Text Solution

    |

  21. Choose the correct alternati e and write it along its allotted alphabe...

    Text Solution

    |