anonymous
  • anonymous
Help.
Physics
  • Stacey Warren - Expert brainly.com
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
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|
theEric
  • theEric
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|
anonymous
  • anonymous
Quick question, is this related to the right hand grip rule?

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theEric
  • theEric
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|
theEric
  • theEric
I assume that "x" is "into the screen."
anonymous
  • anonymous
and the dot out of the screen?
theEric
  • theEric
You try! :)
theEric
  • theEric
http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/magcur.html#c1
theEric
  • theEric
Now, magnetic field vectors add. So you'll see that |dw:1397261439666:dw||dw:1397261494265:dw|
theEric
  • theEric
And|dw:1397261563303:dw|will turn into
theEric
  • theEric
|dw:1397261630895:dw|
anonymous
  • anonymous
ahh now i understand! :) what does that arrow in between the dot and the cross represent?
theEric
  • theEric
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 \((1)+(-1)=0\)
anonymous
  • anonymous
ohhh woah you made it so easy.
theEric
  • theEric
I have to go. Good luck! I'm glad! :)
anonymous
  • anonymous
Thanks a lot!

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