Current Attempt in Progress Figure (a) shows two wires, each carrying a current. Wire 1 consists of a circular arc of radius R = 0.023 m and two radial lengths; it carries current i₁ = 1.7 A in the direction indicated. Wire 2 is long and straight; it carries a current is that can be varied; and it is at distance R/2 from the center of the arc. The net magnetic field B due to the two currents is measured at the center of curvature of the arc. Figure (b) is a plot of the component of B in the direction perpendicular to the figure as a function of current i2. The horizontal scale is set by 125 = 2.0 A. What is the angle subtended by the arc? Number i Units R 441 (a) RO iz (A) (b) 12

Current Attempt in Progress Figure (a) shows two wires, each carrying a current. Wire 1 consists of a circular arc of radius R = 0.023 m and two radial lengths; it carries current i₁ = 1.7 A in the direction indicated. Wire 2 is long and straight; it carries a current is that can be varied; and it is at distance R/2 from the center of the arc. The net magnetic field B due to the two currents is measured at the center of curvature of the arc. Figure (b) is a plot of the component of B in the direction perpendicular to the figure as a function of current i2. The horizontal scale is set by 125 = 2.0 A. What is the angle subtended by the arc? Number i Units R 441 (a) RO iz (A) (b) 12