Question: The wire in Fig. carries current I in the direction shown. The wire consists of a very long, straight section, a quarter circle with radius

The wire in Fig. carries current I in the direction shown. The wire consists of a very long, straight section, a quarter circle with radius R, and another long, straight section. What are the magnitude and direction of the net magnetic field at the center of curvature of the quarter-circle section (point P)?

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