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Solenoid turns

  • #1

Homework Statement


Prove that the number of turns per length on a solenoid is equal to 1/(diameter).


Homework Equations


A= 2(pi)(R)


The Attempt at a Solution



number of turns= length/(2pi*radius)
number of coils per length=(length/(2pi*radius))/length
number of coils per length=1/(2pi*radius)

I'm not sure why I have an extra pi. Did I do something wrong?

Thanks for any help.
 

Answers and Replies

  • #2
rl.bhat
Homework Helper
4,433
7


In the problem the diameter is the diameter of the wire, not the diameter of the solenoid.
 

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