At what distance from a long straight wire carrying current

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Reference no: EM13691446

I have been working on this problem for a while now, and it's supposed to be really simple, but I can't get the solution can you sort of guide me through this problem, and show me the equations you used?

Problem: At what distance from a long, straight wire carrying a current of 12 A does the magnetic field equal that of the earth, approximately .3 G.

Please show all work thanks!

Reference no: EM13691446

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