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!

Homework Help: 4 sides of the wire can produce a B-field

  1. Apr 11, 2013 #1

    Q 21 why the is not downward?? it gains weight!!

    Q22 why the direction is not out of paper, by right hand grip rule, 4 sides of the wire can produce a B-field which is out of paper!!?
  2. jcsd
  3. Apr 11, 2013 #2

    rude man

    User Avatar
    Homework Helper
    Gold Member

    The wire runs into/out of page. Calculate i L x B.
    i L x B again. This time, solve for B.

    What forces are exerted on AB and CD? On BC?

    Don't be concerned with the direction of the B fields generated by the wire. Use the formula!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted