Question

If length and radius of copper wire is increased in same ratio then the resistance of the wire is:
a.) increased by four times
b.) remains same
c.) decreased by two times
d.) increased by two times

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Answer 1

Answer:

The specific resistance of a wire depends only on the material (at a given temperature).Therefore by changing the radius, the specific resistance of copper remains unchanged.

so B I guess.

Explanation:

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