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!

Determine Current in a Solenoid

  1. Mar 26, 2013 #1
    1. The problem statement, all variables and given/known data
    As a new electrical technician, you are designing a large solenoid to produce a uniform 0.170 T magnetic field near the center of the solenoid. You have enough wire for 4200 circular turns. This solenoid must have a length of 1.10 m and a diameter of 1.50 cm. What current will you need to produce the necessary field?


    2. Relevant equations
    B=μ0nI/2r at the center of a solenoid


    3. The attempt at a solution
    I have rearranged the equation to get I=B2r/μ0n. I found the radius to be 7.5*10^-3 m (1/2 diameter) and n=4200 (# of turns). Plugging in the numbers I got a result of 0.483 A which is apparently incorrect. I am confused as to why the length of the solenoid was included in the problem description and am unclear as to where I may have gone wrong (having double checked the math). Does anyone have any suggestions?
     
  2. jcsd
  3. Mar 26, 2013 #2
    Nevermind, figured it out using flux.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Determine Current in a Solenoid
  1. Current in solenoid (Replies: 1)

  2. Current in a Solenoid (Replies: 2)

Loading...