99.29: Two light wires are hung vertically. With electrical current 6+nm7 b 4ope kew7t dfw64rb,din both wires directed upwardsdnbw47ek pe wr, o67btfd6+4m

  94.29: Four infinitely long wires are arranged as shown in i28o exnc 34kzthe accompanying figure’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 of 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 izoe32c84n k ixs the total magnetic field at point P?

  03.30: Two parallel wires are carrying gzl.s3h-/by5oj jky+ibmw1n3 l9 ;ks different electric currents in the same direction as shown in the diagram. How does the magnitude of the force on A from B compare byy/ h1jj+snbs wzk-m9;ki3o 53 l .glto the force on B from A?

  06.37: For the four identical current-carrying wires shown (with conventionalh8lkk pc9dg/g5tm9rnvh 71( jwj/ s 2l current coming out of the plane of the page), the wire on the right is labeled P. What is the direction of the magnetic force on the wlgs9vtk dp/ 7h 2jcrln jwk5 m8h(/91gire labeled P from the other wires?

  05.22: The diagram below shows a straight wire g rgm ta oqd94h3m/p9-carrying current i in a uniform magnetic field. An arrow indicates the magnetic fogh3qt mpg /49a-md 9rorce F on the wire. Of the following possibilities, the direction of the magnetic field must be