99.29: Two light wires are hung verti(3rvu2mrs)d mcp 48-:tkln mvcally. With electrical current in both wires direcrd(4urpv8)lv:3n stk- mm 2mcted upwards

  94.29: Four infinitely long wires are arranged as f+ u95 3eafo+o4fqj3myj +rj nshown 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 foufy9 3ju + n+rfjf5qjo3o+ema 4r wires. What is the total magnetic field at point P?

  03.30: Two parallel wires are carrying difzrkc8nmpg*mide(;f 6.bx :nqcc a ()msg ;7;vferent electric currents in the same direction as sdcs cke(7zqa gb; .8*;irx;:vfgm pc6mm)(nnhown in 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 i1wke 3 g,i4,mw9 z74kts ldpxh11ckuddentical current-carrying wires shown (with conventional current coming out of the plane of the page), the wiriuc s gw 3h94lxep mkdzt1w4k,1d7,1ke on the 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 shows a strax 1 97egm3ksjnight 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 must ben7ksmgx 31e9 j