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kym02 Group Title

Help.

  • 3 months ago
  • 3 months ago

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  1. kym02 Group Title
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    Sketch the field lines for the magnetic fields associated with the currents shown in the diagram below. (The dots and crosses show the direction of the currents.) WARNING: The drawing is a a bit crappy. sorry. :/ |dw:1397260188233:dw|

    • 3 months ago
  2. theEric Group Title
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    Hi! Do you know that the magnetic field "spins around" a wire? Well, the direction of the field at a point ((due to one wire)) is always perpendicular to the imaginary line that connects it to the wire. But perpendicular could be two ways. |dw:1397261007941:dw|

    • 3 months ago
  3. kym02 Group Title
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    Quick question, is this related to the right hand grip rule?

    • 3 months ago
  4. theEric Group Title
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    Right!! Right hand rule. What you do is you take you're thumb. You point it in the direction of the current. Then you look how your fingers are curled. The magnetic field has that same curl!|dw:1397261214896:dw|

    • 3 months ago
  5. theEric Group Title
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    I assume that "x" is "into the screen."

    • 3 months ago
  6. kym02 Group Title
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    and the dot out of the screen?

    • 3 months ago
  7. theEric Group Title
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    You try! :)

    • 3 months ago
  8. theEric Group Title
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    http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/magcur.html#c1

    • 3 months ago
  9. theEric Group Title
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    Now, magnetic field vectors add. So you'll see that |dw:1397261439666:dw||dw:1397261494265:dw|

    • 3 months ago
  10. theEric Group Title
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    And|dw:1397261563303:dw|will turn into

    • 3 months ago
  11. theEric Group Title
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    |dw:1397261630895:dw|

    • 3 months ago
  12. kym02 Group Title
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    ahh now i understand! :) what does that arrow in between the dot and the cross represent?

    • 3 months ago
  13. theEric Group Title
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    You'll need to put these together or re-apply these concepts for you're bigger picture! :) The big arrow, here?|dw:1397261722560:dw|That's because the electric fields add, there, to be EXTRA strong! Between two of the same kind, however, the field CANCELS because they're in opposite directions. It's like \((1)+(-1)=0\)

    • 3 months ago
  14. kym02 Group Title
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    ohhh woah you made it so easy.

    • 3 months ago
  15. theEric Group Title
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    I have to go. Good luck! I'm glad! :)

    • 3 months ago
  16. kym02 Group Title
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    Thanks a lot!

    • 3 months ago
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