99.29: Two light wires are hung verti 3y a2aa 5irt4 6jwmdqdqt)w7 -.msyd,cally. With electrical current in both wires directed upward q7.y 5adadaw 6 )wjsd3t4m2qrt,m-yis

  94.29: Four infinitely long wires are arrange7jp:d;q ajj:-1w ewevd as shown in the accompanying figure’s end-on view. All four wires are perpendicular to the pla7 jv1j w-: qd;p:eweajne 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 different electric currents in thv tkp5 2 )2lg(gj th(2fqqv)xa0mk-i re same direction as shown in the diagram. How does the magnitude of the force on A from B )lgk(g)qpj5 t2x0thf2 r2q (i-mva kvcompare to the force on B from A?

  06.37: For the four identical current-carrying wires shown (with cex hsi-8v xg ji.,y +biym:i(m2t0j0z onventional current coming out of the plane of the page), the wire onh:gei j x+i iyjb 0(yzt0sx-imm8,2.v the right is labeled P. 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 currenz.frg. ychr :3nzh.ul3g.8vo t i in a uniform magnetic field. An arrow indicates the magnetic force F on the winr gu .o 3g:... 8hlh3zzcfyvrre. Of the following possibilities, the direction of the magnetic field must be