# JEE Physics 4

Equal currents of magnitude 1 ampere are flowing through infinitely long wires parallel to $$y$$-axis located at $$x=1,3,5,\ldots$$. The direction of the currents are alternative (the first one at $$x=1$$ being positive) . Find the magnetic field at the origin .

If your answer can be represented in the form of $$\mu_0 A$$ where $$A$$ is a positive real number, Find $$8A$$.

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