99.29: Two light wires are hung vertically. With electrical current in gl1-0wcsl8c ;fem ky1both wires directed upwes-cgylwf1 m8;c k0 1lards

  94.29: Four infinitely long wires are arranged as shown in the accom :qex14rcyr4gpanying figure’s end-on view. All four wires are perpendicr g4eryc1x q4:ular 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 is the total magnetic field at point P?

  03.30: Two parallel wires are carrying ditlrk c3oli0u3u8i +(tje ,;9yb (m gkffferent electric currents 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 fro (i3;0fr l j3tki 9lueuc+tmk8o yg(b,m A?

  06.37: For the four identical currenxnv a:ll1gqogsng9*38*l9 hsw i)k9 m+h 9j mzt-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 direction of the magnetic force on the wi9 nglmh+xh3*1* al:j gs99go8k)nszwmi9 ql vre labeled P from the other wires?

  05.22: The diagram below shows a straight jcjc )bt/.ku l -omv6.wire carrying current i in a uniform magnetic field. An arrow indicates the magnetic force F on the wire. Of. l-b)ck/vcju 6 j.omt the following possibilities, the direction of the magnetic field must be