(a) A conductor in the shape of a square loop of edge length l = 0.400 m carries a current I = 10.0 A as in Fig. P30.3. Calculate the magnitude and direction of the magnetic field at the center of the square. (b) What If? 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?

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Magnetic Force

A magnetic force arises when a charged particle or a current-carrying conductor is placed in a magnetic field. It is created because of the movement of the charged particles.