99.29: Two light wires are hung vertically. 6h*cdq n7 o nzdzi,4 n;1jzicifr0e7n02u sk:With electrical current in both wires directed upwe*hdij f1qu dz647 sz:i o,z0r nn;kni2c7cn 0ards

  94.29: Four infinitely long wires are arranged as shown in the accompanying ff*,rku3wq fm7gi 2w m0.58gzpstiu7sigure’s end-on view. All four wires are perpendicular to the plane of the page and have the same magnitude of current I. The conventional current in the wire in the upper right-hand corner is directed into the plane 0sgtw 5ug3rm7wi 2.um7 sz f,*q fikp8of the page. The other conventional currents are out of the plane of the page. Point P is a distance a from all four wires. What is the total magnetic field at point P?

  03.30: Two parallel wires are carrying different electric cs+bw.dr8w+v, gy grb 9wizwp7vj5+m8urrents in the same direction as shown in the diagram. How does the magnitude of the force on A from B compare to the force on B frigv+mr, wdy+9 s+ww.bgrp8bz w8j 5v7om A?

  06.37: For the four identical c7-u;69fu0zl pb 1m unsg3ezgaurrent-carrying wires shown (with conventional current coming out of the plane of the page), the wire on the right is labeled P. What is the direcnm3upzs790u6lg zfgue ;1-a btion of the magnetic force on the wire labeled P from the other wires?

  05.22: The diagram below shows a straight wire carrying current i inh4 jo9vjc8wd - a uniform magnetic field. An arrow indicates the magnetic force F on the wire. Of the following possibilities, the direction of the mag-jd 89h4wcovj netic field must be