Home
Class 12
PHYSICS
The length of the wire is doubled. Its c...

The length of the wire is doubled. Its conductance will be

A

Remains unchanged

B

Halved

C

Quadrupled

D

1/4 of original

Text Solution

Verified by Experts

The correct Answer is:
B
Conductance `=C=(1)/(K) =(A)/(rhol)`
`:.C prop (1)/(l)`
So, conductance will be halved.
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    PHYSICS WALLAH|Exercise NEET Past 5 Years Questions|23 Videos

  • CURRENT ELECTRICITY

    PHYSICS WALLAH|Exercise NEET Past 5 Years Questions|23 Videos

  • ALTERNATING CURRENT

    PHYSICS WALLAH|Exercise NEET PAST 5 YEARS QUESTIONS |8 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    PHYSICS WALLAH|Exercise Neet past 5 years questions|16 Videos

Similar Questions

Explore conceptually related problems

The length of a conductor is halved. Its conductance will be

If the length of the wire is doubled the strain produced is

Young's modules of material of a wire of length ' "L" ' and cross-sectional area "A" is "Y" .If the length of the wire is doubled and cross-sectional area is halved then Young's modules will be :

The resistance of a wire is R . If the length of the wire is doubled by stretching, then the new resistance will be

The length of sonometer wire is doubled and the tension is increases four times. The frequency will

If the length of a wire is doubled by taking more of wire, what happens to its resistance?

The length of a conductor is halved, its conductivity will be

PHYSICS WALLAH-CURRENT ELECTRICITY-Level-2
  1. The length of the wire is doubled. Its conductance will be

    Text Solution

    |

  2. Six resistances of each 12 ohm are connected as shown in the fig. The ...

    Text Solution

    |

  3. The current in the given circuit is

    Text Solution

    |

  4. The n rows each containinig m cells in series are joined parallel. Max...

    Text Solution

    |

  5. if the electrc current in a lamp decreases by 5% then the power output...

    Text Solution

    |

  6. One filament takes 10min to heat a kettle and another takes 15 min. If...

    Text Solution

    |

  7. If two wires having resistance R and 2 R . Both joined in series and i...

    Text Solution

    |

  8. The length of the potentiometer wire is kept larger so that the value ...

    Text Solution

    |

  9. A galvanometer of resistance 36 Omega is changed into an ammeter by us...

    Text Solution

    |

  10. Working of potentiometer is based on

    Text Solution

    |

  11. A wire of resistance R is elongated n-fold to make a new uniform wire....

    Text Solution

    |

  12. A 10 m long wire ofresistance 20 Omega is connected in series with bat...

    Text Solution

    |

  13. The effective resistance across the point A & B is

    Text Solution

    |

  14. A battery having e.m.f. 5 V and internal resistance 0.5 Omega is conne...

    Text Solution

    |

  15. A cell of e.mf. E and internal resistance r is connected in series wit...

    Text Solution

    |

  16. In a ammeter 0.2% of main current passes through the galvanometer. If ...

    Text Solution

    |

  17. Three voltmeters A, B and C having resistances R, 1.5 R and 3 R respec...

    Text Solution

    |

  18. In the circuit shown, the ratio (I(1))/(I(2)) is equal to

    Text Solution

    |

  19. A resistance wire has a resistance R. Half of this wire is stretched t...

    Text Solution

    |

  20. Consider the figure, cross-sectional area of consider at A and B is 2...

    Text Solution

    |