Two long, parallel wires carry current in the x-y plane. One wire carries 30 A to the left along the x-axis. The other carries 50 A to the right along a parallel line at y = 0.28 m. At what y-axis position in meters is the magnetic field equal to zero?

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  1. μ₀I₁/2πy= μ₀I₂/2π(0.28-y)
    I₁(0.28-y)= I₂y
    y=8.4/80=0.105 m

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  2. wrong answer. is there another solution to it? please try again. thanks

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