1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Solenoid Question

  1. Jun 19, 2006 #1
    It is desired to construct a solenoid that has a resistance of 9.29 ohm and produces a magnetic field at its center of 0.0642 T when it carries a current of 7.32 A. The solenoid is to be constructed from copper wire having a diameter 0.895 mm.
    The resistivity of the copper is 1.7x10-8 ohm-m.
    Find the # of turns of wire needed if the radius of the solenoid is to be 1.26 cm. Answer in units of turns.
    Find the length of the solenoid. Answer in units of cm.

    This is what I did:
    B=N x muI/2R
    .0642=N x (4pi x 10-7)(7.32)/(2*.0126)
    N=175.879 turns
    ...But this is wrong. Can you please help me out & let me know what I did wrong?

    Find the length of the solenoid. Answer in units of cm.
    I used:
    9.29=1.7x10-8(l)/(.000895/2)^2 *pi
    l=34379.8 cm
    ...I think this one is wrong too. Any help would be appreciated! Thanks in advance!!
  2. jcsd
  3. Jun 19, 2006 #2
    nevermind. thanks anyway
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Solenoid Question
  1. Solenoid question (Replies: 2)

  2. Solenoid Question (Replies: 0)

  3. Solenoid Question (Replies: 1)