Home
Class 10
PHYSICS
If the area of cross-section of a resist...

If the area of cross-section of a resistance wire is halved, then its resistance becomes:

A

one-half

B

2 times

C

one-fourth

D

4 times

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ELECTRICITY

    LAKHMIR SINGH & MANJIT KAUR|Exercise Very Short Answer Type Questions|1 Videos

  • ELECTRICITY

    LAKHMIR SINGH & MANJIT KAUR|Exercise Short Answer Type Questions|2 Videos

  • ELECTRICITY

    LAKHMIR SINGH & MANJIT KAUR|Exercise Sample Problem|1 Videos

  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    LAKHMIR SINGH & MANJIT KAUR|Exercise NCERT BOOK|2 Videos

Similar Questions

Explore conceptually related problems

If the diameter of a resistance wire is halved, then its resistance becomes:

If area of cross-section of a metalic wire becomes n times, its resistance becomes

When length of a metal wire is doubled and area of cross-section is reduced to half, then its resistance becomes

When the area of cross-section of a conductor is doubled, its resistance becomes:

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

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

A conductor of length l and area of cross-section A has a resistance R then its specific resistance is

The length and area of cross-section of a conductor are doubled, its resistance is

Calculate the area of cross-section of a wire if its length is .0 m , its resistance is 23 Omega and the resistivity of the material is 1.84 xx 10^-6 Omega m .

When the diameter of a wire is doubled, its resistance becomes:

LAKHMIR SINGH & MANJIT KAUR-ELECTRICITY -Exercise
  1. When the area of cross-section of a conductor is doubled, its resistan...

    Text Solution

    |

  2. The resistivity of copper metal depends on only one of the following f...

    Text Solution

    |

  3. If the area of cross-section of a resistance wire is halved, then its ...

    Text Solution

    |

  4. A piece of wire of resistance 20 Omega is drawn so that its length is ...

    Text Solution

    |

  5. The electrical resistivities of three materials P,Q and R are given be...

    Text Solution

    |

  6. The electrical resistivities of four materials A,B,C and D are given b...

    Text Solution

    |

  7. The electrical resistivities of five substances A,B,C,D and E are give...

    Text Solution

    |

  8. SERIES COMBINATION

    Text Solution

    |

  9. If five resistances, each of value 0.2 ohm, are connected in series, w...

    Text Solution

    |

  10. State Ohm's law. Derive an expression for the equivalent resistance of...

    Text Solution

    |

  11. If 3 resistances of 3 ohm each are connected in parallel, what will be...

    Text Solution

    |

  12. How should the two resistances of 2 ohms each be connected so as to pr...

    Text Solution

    |

  13. Two resistances X and Y are connected turn by turn: (i) in parallel, a...

    Text Solution

    |

  14. What possible values of resultant resistance one can get by combining ...

    Text Solution

    |

  15. Show how you would connect two 4 ohm resistors to produce acombined r...

    Text Solution

    |

  16. Which of the following resistor arrangement, A or B, has the lower com...

    Text Solution

    |

  17. A wire that has resistance R is cut into two equal pieces. The two par...

    Text Solution

    |

  18. Calculate the combined resistance in each case:

    Text Solution

    |

  19. Find the current in each resistor in the circuit shown below:

    Text Solution

    |

  20. Explain with diagrams what is meant by the "series combination" and "p...

    Text Solution

    |