99.29: Two light wires are hung vertically. With electrical current in both wireo8.5 .ztvswd5zll5kes dir5t5..lk o 5evl wz8dzsected upwards

  94.29: Four infinitely long wires are a4l0ppr og;f 3nc hx0 .*nm+ffkrranged as 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 in the upper right-hand corner is directed into the plane of the page. The other conventional currents are out of tnp h;f .mgxc0ff0 l*pro+n43khe 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 in the vt5pht1p+* eh same direction as shown in thepthe1p+5 * htv 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 current-carrying wires s)8:1 dq ij)ok ucb/ fhfit2in1hown (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 from the other wires? :/f2q kinc8 fi)idj hot11)bu

  05.22: The diagram below shows a straight wir +-alnzx-h3 qnw6pv7 je carrying current i in a uniform magnetic field. An arrow indicates the magnetic force F on thew7l+ n phx6 ja-n3-vqz wire. Of the following possibilities, the direction of the magnetic field must be