99.29: Two light wires are hung vertically. Wie c6tlncd2s48+kgwxt(x +ov,th electrical current in both wires directed upwc8 s6, gl4x+xv+wo ekcn2t( dtards

  94.29: Four infinitely long wires are arranged as sfn ql 2v5; zu7*m9nbyehown 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 q u;b*9mz5 nle7fv2ynthe 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. What is the total magnetic field at point P?

  03.30: Two parallel wires :ahf a,t8z2y jy t8qgx,ec 8*nare carrying different electric currents in the same direction as shown ty8,, zxane*2y:g8 ft8jhcaqin the 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-carryfbdl+ ; z)ke q*h:kxblp.- 3ooing wires shown (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 o:)fo; h3- +bkx*lobk.dqz epln the wire labeled P from the other wires?

  05.22: The diagram below shows a straight wire carrying current i in a un* pji :q0yysi(iform magnetic field. An arrow indicates theyqs(i p:0yj*i magnetic force F on the wire. Of the following possibilities, the direction of the magnetic field must be