99.29: Two light wires are hung verticallybi ic-bq4+/3flqoh0qk (4 bi v. With electrical current in both wires directe-b v bibi/cql3h i+q0fo qk(44d upwards

  94.29: Four infinitely long wires are arranged as shown in the accompa,gi;g1s6 diw rwji8k a5fjy) 7nying 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 aw15igarfgik);7,syi 6 wjj 8 d distance a from all four wires. What is the total magnetic field at point P?

  03.30: Two parallel wires arxc n xqz8f c2rgw,.6j2y6q nv.e carrying different electric currents in the same direction as shown in the diagram. How does the mag,6x 2qz62.. nv fcgjy8qxcwr nnitude of the force on A from B compare to the force on B from A?

  06.37: For the four identic9f j:krnow )i)dms.f676us vmt1rqf(al current-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 di1kfqmur ojnw f:s( fv66i drstm7.9))rection of the magnetic force on the wire labeled P from the other wires?

  05.22: The diagram below shows a straight wire carrying current i in a uniforryo2dte+emgo0 +l(qcl1y-d 5m magnetic field. An arrow indicates the magnetic force F on the wire. Of the following possib2t d- yo(c1 ml+eeqd l+go5ry0ilities, the direction of the magnetic field must be