99.29: Two light wires are hung vertically. With electrical current in 3nhtfs:-mjk 52 2vu72c nk/mu hta.f 8l *gaxgboth wires direcf7* us2 8mf2t n2x-cuthhjvk 5 l.3/gmnakg :ated upwards

  94.29: Four infinitely long wires are arranged as shows7u 4b7i 2w: w0 ics-lki,2oslp9le kan 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. Po cs sa-:e0ii2wksll4,p29uw kl77bio int P is a distance a from all four wires. What is the total magnetic field at point P?

  03.30: Two parallel wires are o ai5vx3k x) -o(;ntqwcarrying different 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 wkx3)-aqi;x (5 nvtooB from A?

  06.37: For the four identdqv7o l 99p0/gpa +yllical current-carrying wires shown (with conventional current coming out of the plane of the page), the wire on the right is labeled p+q/ pv9g ll 7od0yla9P. 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 carrying current i in a t o4/klp((advzr+ p64 dzua* *gqny7 puniform magnetic fielp7/4udpdnlk*z y*aortavp( qg(6+ 4 zd. An arrow indicates the magnetic force F on the wire. Of the following possibilities, the direction of the magnetic field must be