Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Magnetic Field and solenoids

  1. Feb 27, 2012 #1
    1. The problem statement, all variables and given/known data

    A 0.20 m long solenoid contains 1000 turns and carries a current of 5.0 A. What is the strength of the magnetic field at the center of the solenoid if its radius is 10-2m?

    a. 35.1*10-1T

    b. 8.2*10-1T

    c. .95*10-2T

    *d. 6.3*10-3T

    2. Relevant equations


    3. The attempt at a solution


    the answer key says its 6.3x10^-3T...what am I doing wrong?
  2. jcsd
  3. Feb 27, 2012 #2


    User Avatar

    Staff: Mentor

    It could be that the answer key is wrong since your calculation looks fine.
  4. Feb 27, 2012 #3
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook