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kym02
 9 months ago
Best ResponseYou've already chosen the best response.1Sketch 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
 9 months ago
Best ResponseYou've already chosen the best response.1Hi! 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

kym02
 9 months ago
Best ResponseYou've already chosen the best response.1Quick question, is this related to the right hand grip rule?

theEric
 9 months ago
Best ResponseYou've already chosen the best response.1Right!! 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
 9 months ago
Best ResponseYou've already chosen the best response.1I assume that "x" is "into the screen."

kym02
 9 months ago
Best ResponseYou've already chosen the best response.1and the dot out of the screen?

theEric
 9 months ago
Best ResponseYou've already chosen the best response.1http://hyperphysics.phyastr.gsu.edu/hbase/magnetic/magcur.html#c1

theEric
 9 months ago
Best ResponseYou've already chosen the best response.1Now, magnetic field vectors add. So you'll see that dw:1397261439666:dwdw:1397261494265:dw

theEric
 9 months ago
Best ResponseYou've already chosen the best response.1Anddw:1397261563303:dwwill turn into

kym02
 9 months ago
Best ResponseYou've already chosen the best response.1ahh now i understand! :) what does that arrow in between the dot and the cross represent?

theEric
 9 months ago
Best ResponseYou've already chosen the best response.1You'll need to put these together or reapply these concepts for you're bigger picture! :) The big arrow, here?dw:1397261722560:dwThat'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 \((1)+(1)=0\)

kym02
 9 months ago
Best ResponseYou've already chosen the best response.1ohhh woah you made it so easy.

theEric
 9 months ago
Best ResponseYou've already chosen the best response.1I have to go. Good luck! I'm glad! :)
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