Review | Constants The information about the magnitudes of the current density and the diameters for wires 1, 2, 3, and 4 is given in the table. Some of the values are unknown. Learning Goal: To learn to apply the concept of current density and Kirchhoff's Wire Current density (A/mm2) Diameter (mm) Total Current (A) junction rule. 1 1.6 2.0 ??? Consider a junction of five wires, as shown in the figure. The arrows 2 ?? ? 3.0 2.0 indicate the direction of current flow. (Figure 1) 3 3.0 1.1 ?? ? 4 0.8 ? ? ? 4.0 Part A Find the current Is in wire 5. Express your answer in amperes. Use two significant figures. Assume that the current out of the junction is positive and that the current into the junction is negative. View Available Hint(s) Figure 1 of 1 (> AEd 0 : ] ? Is = A Wire 2 Wire 3 Submit Wire 4