Field of a current loop

Given a circular wire loop of radius 5cm 5 \, \text{cm} that carries current 500mA 500 \, \text{mA} , let B B be the magnitude of the magnetic field a distance of 5m5 \, \text{m} from the center of the loop as measured along an axis perpendicular to the plane of the loop that goes through the center of the loop. (Assume that the radius of the loop is much smaller than the distance along the axis.)

Find B/μ0 B / \mu_0 in A/m \text{A}/\text{m} .

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