Question

If a wire is folded , will there be any changr in its resistance ?​

Answer 1

The resistivity of any wire and its material does not change when subjected to a change that is physical, as is in this case with the shape of the wire. Resistance however a different issue. where is length of conductor and is the area of cross-section.

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Answer 2

The wire folded and doubled upon itself from the center and percentage changes in its resistance. The resistance is the inversely proportional to the cross sectional area. The lower in the radius will also lower the resistance... Hence the percentage change in resistance is much lower when the folded and double.