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How does the expression simplify

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Reference no: EM132045814

Two infinitely long parallel wires separated by a distance d carry opposite currents of magnitude I.

a) What is the magnitude of the magnetic field at a distance r > d from the midpoint of the two wires at a location that is equidistant from the two wires?

b) If r >> d, how does the expression simplify?

Reference no: EM132045814

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