A circular loop of radius R=4 cm carries a current I=2A. What is the magnitude of the magnetic field on the axis of the loop at its center? What about 2 cm from its center, 4 cm from its center, and 10 cm from its center?
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circular loop of radius R carries a current I. Obtain an expression for the magnetic field at a point on its axis at a distance x from its centre.
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