99.29: Two light wires are hunq t4 vhszioxa82d )f,3(sp/ xag vertically. With electrical current in both wire/v ,axih pao )4tzdsq382 sxf(s directed upwards

  94.29: Four infinitely long wires are arranged as shown in th ze-o80y4uniqrlulo 8 72wt8we 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 ofwe-u8y8nz 4l0olut 78 rqio2w 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 currgqz 7 ju9apy g5;c.ro)ents in the same direction as shown in q .pa;og7z9g)ucryj 5the 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 identical curri92 q/jms.wkec4+,b ;/9rdkraugl qj ent-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 wire labeled P frokb49md /q wc lr ugrj2eak+q.s9ji/, ;m the other wires?

  05.22: The diagram below showsn. y qq/37bmue,,jgyq a straight wire carrying current i in a uniform magnetic field. An arrow indicates the magnetic force F , u37/jq qbmgn.yqy,eon the wire. Of the following possibilities, the direction of the magnetic field must be