The figure below shows two current segments. The lower segment carries current i1 = 0.44 A and includes a circular arc with radius 6.8 cm, angle 180°, and center point P. The upper segment carries current i2 = 2i1 and includes a circular arc with radius 4.8 cm, angle 120°, and the same center point P. What are the (a) magnitude and (b) direction (into or otherwise of the page) of the net magnetic field for the indicated current directions? What are the (c) magnitude and (d) direction (into or otherwise of the page) of if i1 is reversed?


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Magnetic Effects of Current

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