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## Homework Statement

The two wires shown in the figure carry currents of I = 5.58 A in opposite directions and are separated by a distance of d0 = 8.43 cm.

Calculate the net magnetic field at a point midway between the wires. Use the direction out of the page as the positive direction and into the page as the negative direction in your answer.

http://tinypic.com/r/258ufyq/8

## Homework Equations

2*u0*i / 2*pi*r

## The Attempt at a Solution

2(4piE-7)(5.58) / 2(pi)(.04215) = 5.286E-5 T

Hw system says it's incorrect, I don't know where to go from here :(