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Help with question related to magnetism

  1. Aug 2, 2008 #1

    I was hoping if any of you could help me with this problem. It's one of the many I have for my homework assignment.

    A long straight wire carries a current i. A particle having a positive charge q and mass m kept at a distance x from the wire is projected towards it with a speed u. Find the minimum separation between the wire and the particle.

    Any help would be greatly appreciated. I'm in high school, btw.

    Thank you.
  2. jcsd
  3. Aug 2, 2008 #2


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    Hi Antithesis and welcome to PF,

    What are your thoughts on the question? What have you tried thus far?
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