Home
Class 11
PHYSICS
Choose correct alternative. Two wires ...

Choose correct alternative.
Two wires of same material and same length are connected in series. The area of cross section of wires is in ratio `3:1`. The resistance of thicker wire is `10 Omega`. The total resistance of combination is

A

`10 Omega`

B

`20 Omega`

C

`30 Omega`

D

`40 Omega`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Annual Exam

    CHETANA PUBLICATION|Exercise EXERCISE|51 Videos

  • ELECTROMAGNETIC WAVES AND COMMUNICATON SYSTEM

    CHETANA PUBLICATION|Exercise EXERCISE|141 Videos

Similar Questions

Explore conceptually related problems

Choose correct alternative. Two wires have their lengths in the ratio 5:3 and radii in the ratio 1: 2 . Ratio of their resistivity is 3: 4 . The ratio of resistance is

Choose correct alternative. Masses of three pieces of wires made of the same metal are in the ratio 1:3:5 and their lengths are in the ratio 5:3:1 . The ratios of their resistances are

Choose correct alternative. A wire of resistance R is cut into 'n' equal parts. They are connected in parallel. The equivalent resistance now beomes,

Choose correct alternative. The radiusof a copper wire is doubled.Its specific resistance

Choose correct alternative. The wire of length L and resistance R isstretched so that its radius of cross-section is halved. What is its new resistance?

Choose correct alternative. When two resistances are connected in parallel then the equivalent resistance is 6//5 Omega . When one of the resistances is removed then the effective resistance is 2 Omega . The resistance of the wire removed will be A. 3 Ω B. 2 Ω C. 3 / 5 Ω D. 6 / 5 Ω

Choose correct alternative. The number of equal resistance connected in series have effective resistance of 32 Omega . When the same resistances are connected in parallel then effective resistance is 2 Omega . The number of resistances are A. 4 B. 8 C. 5 D. 10

The ratio of radii of two wires of same material is 2 : 1. If they are stretched by the same force, the ratio of their stress is

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

CHETANA PUBLICATION-ELECTRIC CURRENT THROUGH CONDUCTORS-EXERCISE
  1. Choose correct alternative. The specific resistance of the material ...

    Text Solution

    |

  2. Choose correct alternative. The internal resistance of an ideal cell...

    Text Solution

    |

  3. Choose correct alternative. Two wires of same material and same leng...

    Text Solution

    |

  4. Choose correct alternative. A wire of length 20 cm has resistance 5 ...

    Text Solution

    |

  5. Choose correct alternative. If R is the resultant resistance of n si...

    Text Solution

    |

  6. Choose correct alternative. How many cells of emf 1.5 volt and inter...

    Text Solution

    |

  7. Choose correct alternative. Six cells each of emf 1.4 volt and inter...

    Text Solution

    |

  8. Choose correct alternative. Two resistance of 3 Omega and 2 Omega ar...

    Text Solution

    |

  9. Choose correct alternative. In which one of the following substance...

    Text Solution

    |

  10. Choose correct alternative. One volt is equal to

    Text Solution

    |

  11. Choose correct alternative. If R1 and R2 are the filament resistance...

    Text Solution

    |

  12. Choose correct alternative. A uniform copper wire of resistance 5 Om...

    Text Solution

    |

  13. Choose correct alternative. A current of 3.2 ampere is flowing in a ...

    Text Solution

    |

  14. Choose correct alternative. The length of a conductor is halved. Its...

    Text Solution

    |

  15. Choose correct alternative. When potential difference is not applied...

    Text Solution

    |

  16. Choose correct alternative. A wire carries a current of 1 A. The num...

    Text Solution

    |

  17. Choose correct alternative. A wire of resistance 100 Omegais cut int...

    Text Solution

    |

  18. Choose correct alternative. A thin, uniform wire of resistance 40 Om...

    Text Solution

    |

  19. Choose correct alternative. A wire of resistance R is cut into 'n' e...

    Text Solution

    |

  20. Choose correct alternative. Two wires have their lengths in the rati...

    Text Solution

    |