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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