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A long straight wire carries a (+) current of two amps in a direction

  1. Mar 17, 2004 #1
    A long straight wire carries a (+) current of two amps in a direction 30 deg W of N. At apoint 0.5 m from the wire( in a direction 60 deg S of W) the magnetic field that it creates has size of how many Tesla.
     
  2. jcsd
  3. Mar 17, 2004 #2
    The magnetic field that an "inifite" current-carrying wire creates is:

    [tex]B = \frac{\mu_0I}{2\pi r}[/tex]

    [tex]I[/tex] being the current that it carries, [tex]r[/tex] being the distance from the wire and [tex]\mu_0 = 4\pi * {10}^{-7}[/tex]
     
  4. Mar 18, 2004 #3

    HallsofIvy

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    As Chen pointed out, the answer depends only on the distance, which you are given. The angles given are irrelevant.
     
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