99.29: Two light wires are hung vertick kd;j26 g6pq6h dlz jxgni17;ally. With electrical current in both wires directed z; gd7j6ikhnp 6 l1;k6gdj2qxupwards

  94.29: Four infinitely long wires are arranged aw.edz pj8b l,1s shown in the 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 ilew1bp,8.jz dn 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 dill5ao6bos qgp+6/he lb /+a2ifferent electric currents in the same direction as shown in the diagram. How does the magnitude of the force on A from B compare to the force on B +26lai l5//b b+ pahooeg6 slqfrom A?

  06.37: For the four identical current-carrying wires shown (wit r 4ogy)57x,q zep+/8ekgi uirh conventional current coming out of the plane of the page), the wire on th+iiux/ zq 8ygkerrg4,p75o )ee 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 ;t kvcr8t: 7yishows 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, the direction of the magnetic field must7rky t:t8v;ci be