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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
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Knowledge Check

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

    A
    four times
    B
    half
    C
    one-fourth
    D
    two times

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

    A
    `((1)/(n ^(2)))` times
    B
    `n ^(2)` times
    C
    `n ^(4)` times
    D
    `((1)/(n ^(4)))` times

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

    A
    half
    B
    double
    C
    four times
    D
    No changes

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