99.29: Two light wires are hung vertically. With ele gg5.hemtp8 0gctrical current in both wires directed upwa0e mtggg ph85.rds

  94.29: Four infinitely long wires are arrangwp+3* 0 4abtk+m )u4huipn jcved 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 the plane of the page. Point P is a distance a from all four wires. Whu3tp uc40jvp )+ i*w k4h+nmbaat is the total magnetic field at point P?

  03.30: Two parallel wirpi cq.4sej;+vau9o f4z .uk :hc(t *rjes 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 compare .qp+h*.vz4 jju:oceu9f ir 4ta;ks( cto the force on B from A?

  06.37: For the four identical current-carrying lgk ai h5rwkg.h:;/7h wires shown (with conventional current coming out of the plane of the page), the wire on the right is labeled.hk/: kgah7rwglh;5i P. What is the direction of the magnetic force on the wire labeled P from the other wires?

  05.22: The diagram below shows a straight wire carryin3 xs3nz7 gef0ig current i in a uniform magnetic field. An arrow indicates the magnetic force F on the wire. Of the following possibilities, the direction of thfsn3x7g3e0z i e magnetic field must be