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Magnet and Current-carrying wire/circuit

  1. May 4, 2009 #1
    Hi all Can you assist - I think that I am on the right track - but then I could be wrong..

    View attachment Physics Question 1.doc

    1. The problem statement, all variables and given/known data

    Predict which direction the wire will move

    2. Relevant equations

    Right hand rule

    3. The attempt at a solution

    Current flows from positive to negative. Right hand rule has magnetic field - anticlockwise.
    A northward force. The assumption is that the wire will move away from the magnet.

    Two other related questions...

    2. Would the wire returning from the resistor to the source be affected in the same direction and or as strongly. Explain?

    I assume a southward field and therefore will be attracted to the magnet.

    3. In the absence of the magnet, would the two long wires exert any force on each other? Explain.

    No, force.

    Cheers Petra
  2. jcsd
  3. May 4, 2009 #2
    To work out the direction the wire will move you will need to use Flemings left hand rule, the right hand rule is for generators =]
    Last edited: May 4, 2009
  4. May 4, 2009 #3
    HI Rory

    Thanks for the reply. The question states (Remember the righthand rule).

    Cheers Petra
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