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(a) A conductor in the shape of a square loop of edge length=0.400m carries a current I=10.0A. Calculate the magnitude and direction of the magnetic field at the center of the square.
(b) If this conductor is formed into a single circular turn and carries the same current, what is the value of the magnetic field at the center?
(b) If this conductor is formed into a single circular turn and carries the same current, what is the value of the magnetic field at the center?