99.29: Two light wires are hung verticq w*.ce:arf,cally. With electrical current in both wires di,efq crc.:*wa rected upwards

  94.29: Four infinitely long wires are arranged as shown in the accomp9kmz/pe6,xkt qs p(3fanying figure’s end-on view. All four 6( fx s,pt9/m 3pkkeqzwires 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 total magnetic field at point P?

  03.30: Two parallel wires are carrying different electric currents i)ijwdoqt )k*de:v ) n+n the same direction as shown in the diagram. How does the magnitude of the force on A fromq did) ek:j*tv)n +wo) B compare to the force on B from A?

  06.37: For the four identical current-carrying wires shown (with conva3rrgk d84) (9fza.gam4 oyck entional 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 wire labeled P from the other.4rrzya4 fka kadc(mo8 g3)g9 wires?

  05.22: The diagram belowy 2wx3el/eid9 shows a straight wire carrying current i in a uniform magnetic field. An arrow indicates the magnetic force F on the wire. Of the following possibilities, dy/xie3lw 9e2the direction of the magnetic field must be