Here is the question I'm facing,
The cross sectional area of a bare wire is a square of area 1.00mm^2. A 10.0m, length of this wire is wound close together on a wooden cylinder so that neighbouring coils are completely in contact with each other. There is a total of 200 coils. The resistivity of the material of the wire is 1.0 x 10^(-6)ohmm. Estimate the effective resistance of the arrangement.
My question is what's the purpose of wounding a wire closely together and what's the words 'completely in contact with each other' trying to emphasize? Furthermore, how does the effective resistance of the arrangement changes after the wire is wounded to 200 coils ?