Home
Class 12
PHYSICS
Resistance of a conductor of length l an...

Resistance of a conductor of length l and area of cross-section A is R. If its length is doubled and area of cross-section is halved, then find its new resistance.

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    DC PANDEY ENGLISH|Exercise Check point|70 Videos

  • CURRENT ELECTRICITY

    DC PANDEY ENGLISH|Exercise Taking it together|142 Videos

  • CURRENT ELECTRICITY

    DC PANDEY ENGLISH|Exercise Level 2 Subjective|13 Videos

  • COMMUNICATION SYSTEM

    DC PANDEY ENGLISH|Exercise Subjective|11 Videos

  • ELECTROMAGNETIC INDUCTION

    DC PANDEY ENGLISH|Exercise Medical entrances gallery|25 Videos

Similar Questions

Explore conceptually related problems

Resistivity of a conductor of length l and cross - section A is rho . If its length is doubled and area of cross-section is halved, then its new resistivity will be .

When the length and area of cross-section both are doubled, then its resistance

Resistance of the conductor of length 5m and area of cross -section 4 mm^(2) s 0.02 Omega . Its resistivity is

Conductivity of a conductor of length L and radius of cross-section r at temperature t^(@) C is sigma . If its length is doubled and radius is halved at same temperature, then new conductivity of the conductor will be

The self inductance of a solenoid of length L, area of cross-section A and having N turns is-

The self inductance L of a solenoid of length l and area of cross-section A, with a fixed number of turns N increases as

The self inductance L of a solenoid of length l and area of cross-section A, with a fixed number of turns N increases as

The self inductance L of a solenoid of length l and area of cross-section A, with a fixed number of turns N increases as

A cylindrical conductor of length l and uniform area of cross-section A has resistance R . Another conductor of length 2 l and resistance R of the same material has area of cross-section :

When the number of turns and the length of the solenoid are doubled keeping the area of cross-section same, the inductance

DC PANDEY ENGLISH-CURRENT ELECTRICITY-Example
  1. What is the drift velocity of electrons in a silver wire of length 2 m...

    Text Solution

    |

  2. The resistance of a wire is R ohm. What will be its new resistance if ...

    Text Solution

    |

  3. Resistance of a conductor of length l and area of cross-section A is R...

    Text Solution

    |

  4. All the edges of a block with parallel faces are unequal. Its longest ...

    Text Solution

    |

  5. Calculate the electric field in a copper wire of cross-sectional area2...

    Text Solution

    |

  6. A copper wire has a resistance of 10 Omega and an area of cross-secti...

    Text Solution

    |

  7. A current of 1.0 ampere is flowing through a copper wire of length 0.1...

    Text Solution

    |

  8. Find the relaxation time for free electrons in copper, if the density ...

    Text Solution

    |

  9. A wire has a resistance R. Find new resistance, (i) if radius of cro...

    Text Solution

    |

  10. The resistance of a thin silver wire is 1.0 Omega at 20^@C. The wire i...

    Text Solution

    |

  11. Resistance of platinum wire in a platinum resistance thermometer at me...

    Text Solution

    |

  12. The temperature coefficient of resistance of a wire is 0.00145^(@)C^(-...

    Text Solution

    |

  13. How will you repersent a resistance of 3700 Omega +- 10% by colour cod...

    Text Solution

    |

  14. A wire of resistance 6R is bent in the form of a circle. What is the e...

    Text Solution

    |

  15. Find the equivalent resistance between A and B in the following cases

    Text Solution

    |

  16. A letter A consists of a uniform wire of resistance 1 ohm per cm. The ...

    Text Solution

    |

  17. Find in the given network of resistors, the equivalent resistance betw...

    Text Solution

    |

  18. Find the effective resistance between points A and B for the network s...

    Text Solution

    |

  19. Find the equivalent resistance between A and B in the following case

    Text Solution

    |

  20. Find the equivalent resistance between A and B.

    Text Solution

    |