At a particular point in time, a negative point charge q1 = Q is located at 5'1 = (0,3d, 0) and moving with velocity 1'51 = (0.17,0)-* At that same instant, a positive point charge q; = +4x/EQ is located at F2 = (d,d,0) and moving with velocity 132 = (v, 0, 0). Also, a very long wire carrying a current I that flows in the +2: direction is located in the horizontal line dened by y = d. In all parts below, we are looking at the magnetic field at the origin. A. [10 points] Find the magnetic eld at the origin due to these charges and currents. 40 :1 *Q 3:] I 2:? -'- +--1\\/