A Jong straight wire, perpendicular to the page, passes through a uniform external magnetic field. The net magnetic field at point 3 is zero. a. What is the direction of the current in the wire? Explain. b. Points 1 & 2 are the same distance from the wire as point 3, and point 4 is twice as distant. Construct vector diagrams at points 1, 2, & 4 to determine the net magnetic field at each point. Draw them into the given picture (not elsewhere). . Rank the magnitudes of net magnetic field using >, >r, where L is the length of the wire &r is the distance away from the center of the wire. Explain and show work, as always with symbolic equation first, LI )r 'r2+('2')2 then values plugged in. Recall s |Bat? away from straight wire | = e e. Please list all resources consulted or specify none. Uniform B-field 1 o O wire _ 3 o 4' where (:g) =107 w8