99.29: Two light wires are hung vertically. With electrical current in both)ui6xkqy. s48hbfav6 wires dirk uixsy48)6f6 abvhq.ected upwards

  94.29: Four infinitely long wires are arranged as shown in thmkbl118k syykn8dp;e (n 7v7ue accompanying figure’s end-on view. All four wires are perpendicular to the plane of the page and havn lk8us8nvp1 ke 7(7;d1mb yyke 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 wirl0 f e jdtei+:;4p9yqbes are carrying different electric currents in the same direction as shown in the diagram. How does the magnitude of the force on A from B comp fl; eb9tyj:+0qi edp4are to the force on B from A?

  06.37: For the four identical current-carrying wires o 1wj3u7x rartw+ 88wsshown (with conventional current coming out of the plane of the page), the wire on the right is labeled P. What is thus 31w8wxa +8j t7wrore direction of the magnetic force on the wire labeled P from the other wires?

  05.22: The diagram below shows a straight wire carrying current av;o/ 4l b- altc l51h,nvljk2i in a uniform magnetic field. An arrow indicates the magnetic force F on the wire. Of the following possibilities, the direction o-4ltv l5 2hnvlb; ,ko/l1ajcaf the magnetic field must be