Recent content by uibble

  1. U

    Current required to lift a wire in a magnetic field

    Yes, that observation about the direction of the magnetic field was given in the question and I should have stated it in the template. Sorry! I'm new to all of this and I'm surprised that it takes such a large current to move such a light wire. I'm used to 13A fuses and so forth on domestic...
  2. U

    Current required to lift a wire in a magnetic field

    Homework Statement A wire of mass 3.0g and length 60cm is placed on a table parallel to the East-West direction. If a current flows through the wire from West to East, how large must the current be to cause the wire to lift off the surface of the table? (The Earth's magnetic field has strength...
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