Figure 29-56a shows two wires, each carrying a current. Wire 1 consists of a circular
Chapter 29, Problem 28(choose chapter or problem)
Figure 29-56a shows two wires, each carrying a current. Wire 1 consists of a circular arc of radius R and two radial lengths; it carries current i1 2.0 A in the direction indicated.Wire 2 is long and straight; it carries a current i2 that can be varied; and it is at distance R/2 from the center of the arc. The net magnetic field due to the two currents is measured at the center of curvature of the arc. Figure 29-56b is a plot of the component of in the direction perpendicular to the figure as a function of current i2. The horizontal scale is set by i2s 1.00 A. What is the angle subtended by the arc? i1i2__R2(a) (b)0 i2sBi2 (A) Figure 29-56 28.
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