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Electromagnetic fields

  • Thread starter Fumbles22
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  • #1
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Hello,

I'm stuck on this question, and it's really annoying me. I scanned the page so it has a bit more context.

img272_zps27d9afc6.jpg


It's question 3.7: "A long wire carrying a steady current is placed in a uniform magnetic field parallel to it's own length. What is the shape of the magnetic field lines close to the wire?".

I approached the problem like this:

img270_zpsaeb417b8.jpg


(Sorry about my awful handwriting!)

I'm close to the answer in the back of the book (which i'll withhold for now) but it still isn't right. Unfortunately, I can't see what i've done wrong.

I was hoping that someone could point out any gaps in my working.

Thanks in advance!
 

Answers and Replies

  • #2
rude man
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I don't see what's wrong with what you did. Maybe you could express r as sqrt(x^2 +y^2) but other than that ...
 

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