99.29: Two light wires are hungmq/rlmy:tx jyu5 imc: *38 j1r vertically. With electrical current in both wires directed upwardsyjr/ 1mq: rmx*8mcju l53ti:y

  94.29: Four infinitely long wires are arrar. +al: e;lc yizel:.3k1zmqjnged as shown in the 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 is the;r3 +zm1ql ec l:akzyij.:le. total magnetic field at point P?

  03.30: Two parallel wires are carrying different electric ,n 1szbswz h77b op19c,qm/v r qx94kgcurrents in the same direction as sgb9c9k 1 wxsq mpv/b17 z,hr4so,7qn zhown in the diagram. How does the magnitude of the force on A from B compare to the force on B from A?

  06.37: For the four ide3bx uc;h/(tylsbu1 1tntical current-carrying wires shown (with conventional current coming out of the plane of the page), the wire on the right is labeled Pxt(c3uyu ;/hb b 1t1ls. What is the direction of the magnetic force on the wire labeled P from the other wires?

  05.22: The diagram below shows a straight wire carrying curaw am+ ns.qy8rw);0sxrent i in a uniform magnetic field. An arrow indicates the magnea+ xns0;a 8.rwqmys w)tic force F on the wire. Of the following possibilities, the direction of the magnetic field must be