Resistivity of a wire that is wound close on a cylinder

AI Thread Summary
The discussion revolves around calculating the resistivity of a wire wound closely around a cylinder, using the formula R = ρl/A. Participants emphasize the importance of starting with a diagram to visualize the problem and suggest that showing initial efforts is crucial for understanding. There is a focus on the need to consider the 200 coils in the calculations, although specific steps remain unclear to some contributors. The conversation highlights the challenge of applying theoretical equations to practical scenarios. Overall, the thread underscores the necessity of a structured approach to solving the problem.
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Homework Statement



20793725_1771973616149698_645562293_o.jpg

Homework Equations


R= pl/A
effective resistance= 1/R

The Attempt at a Solution


I'm honestly don't know where to start, althought I know i need to do something with the 200 coils first, but I have no idea what should be done with it
 
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curiosity colour said:

Homework Statement



View attachment 208708

Homework Equations


R= pl/A
effective resistance= 1/R

The Attempt at a Solution


I'm honestly don't know where to start, althought I know i need to do something with the 200 coils first, but I have no idea what should be done with it
You can start with a diagram. It is mandatory here to show some efforts on your own.
 
cnh1995 said:
You can start with a diagram. It is mandatory here to show some efforts on your own.
I think it's should look like this, with the wire wound closely together( please excuse my horrible drawing).
20750448_1772001139480279_1032064015_n.png
 

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