1. Limited time only! Sign up for a free 30min personal 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!

Calculating B

  1. Jul 5, 2008 #1
    What is the magnetic field at the center of a 60-turn coil carrying a current of 4 A, if it has a radius of 0.2 m?

    I was thinking of using the equation B=(mu0)(N/l)(current)

    But I was wondering do I use the radius for l or do I use the diameter?
  2. jcsd
  3. Jul 5, 2008 #2


    User Avatar
    Homework Helper

    I think you need to consider it as flat circular coil instead of a solenoid

    [tex]B=\frac{\mu_0 NI}{2r}[/tex]
  4. Jul 5, 2008 #3
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Calculating B