How to graph magnetic field between two wires?

  • Thread starter zzizi
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  • #26
ideasrule
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but the graph itself looks wrong too. it should be symmetric and it should have a minimum at the center. make sure you are adding the fields from the two wires together.
That's true if she was plotting the absolute magnitude of the magnetic field with respect to "r". Otherwise, the field would change sign at the center because the field of the second wire, whose magnetic field is opposite to that of the first, would start dominating.
 
  • #27
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Oops, sorry for misunderstanding the question. I was thinking of a perpendicular line in the 3rd dimension, that threads through the space between the two wires.

eczeno is correct, and has been providing great help. One suggestion: if your point is a distance "r" from the first wire, it's 6 cm - r from the other wire. Use this to write out an equation for the magnetic field, then plot the graph according to this equation.
Yes thanks very much for the help. But can you write for me the equation that you have suggested?
 

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