3. Two infinitely long wires carry equal currents of 1 into the page, as shown in Figure 1126. Figure 17.26 (:1) Calculate the magnitude and direction of the magnetic field along the x axis as a function of position, B(x). (b) Sketch the magnetic vector field along the xaxis' (c) Calculate the work required to move a point charge of value +q from x = co _ to the origin. What does this result reveal about magnetic fields in general