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Loop of wire is connected to the terminals of a battery

  1. Mar 30, 2012 #1
    1. The problem statement, all variables and given/known data

    A loop of wire is connected to the terminals of a battery.
    See Diagram: http://www.webassign.net/walker/22-35.gif

    The A terminal is of higher voltage, so the current travels clockwise from A to B through the loop.

    If you have the ability to send whatever current you like (or none at all) into this wire loop, how can you affect the nearby bar magnet?
    (Select all that apply.)
    a) leave the magnet alone
    b) repel the magnet
    c) attract the magnet


    2. Relevant equations

    n/a -- conceptual question.

    3. The attempt at a solution

    so, my thought is that you a current through the loop if you EITHER attract or repel the magnet and move it through the loop. If you leave it alone, there will be no current.

    I've tried selecting B) and C) but that's wrong.
    Are choices A) B) and C) all correct?
     
  2. jcsd
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