Question

how does a resistance and specific resistance of a wire depend on its length and radius
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Answer 1

More the radius more the cross section area due to which resistance will be less as R is inversely proportional to area of cross section..

Similarly R also depends on length

But it is directly proportional to length of the conductor

But.....

Specific resistance or the resistivity do not depend on the length and radius of the conductor

Answer 2

resistance depends upon length because it is directly proportional to the length of the conductor. in does not directly depends upon area of the conductor.

specific resistance resistivity does not depends upon length and area because it only depends upon the material and the temperature of the conductor.

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