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## Homework Statement

Two straight parallel wires carry currents in opposite directions. The wire on the right carries a current of I2 = 11.5 A. Point A is the midpoint between the wires. The total distance between the wires is d = 10.7 cm. Point C is 5.88 cm to the right of the right wire carrying current I2. Wire on the left carries current I1 and is adjusted so that the magnetic field at C is zero. Calculate the value of the current I1.

## Homework Equations

I2/R2 =I1/R1

B=I/R

Know I2< I1

## The Attempt at a Solution

I know you have to use the 1st equation as a ratio but I do not know how to find R1.

R2 I believe in just 5.88cm (.0588m)