99.29: Two light wires are hung vertically. With electrical curre31 u78hjf h6:oj8 h*fb oqzg9cep1wrxnt in both wires directed9 f 3 ch7pqzwh8*fe:jb61og hr oj1x8u upwards

  94.29: Four infinitely long wirnp+b7//l 1ms 4e bxcbjes are arranged as shown in the accompanying figure’m pb /bx1+bc n4sj/7les 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. What is the total magnetic field at point P?

  03.30: Two parallel wires are carrying different yul8d7 lr kr5dxn1f5*electric currents in the same direction as shown in the diagram. How does the magnitude of the force on A from B compare to td* xr 5fy8lrun5dk71l he force on B from A?

  06.37: For the four identical currentbm 4hfvk 3e+/7 ounsptclm/;4-carrying wires shown (with conventional current coming out of the plane of the page), the wire on the right is labeled P. What is th3ft;p 7me k4 um+/vc4/lb osnhe direction of the magnetic force on the wire labeled P from the other wires?

  05.22: The diagram below shows a strh kg c*f 6fe23m8sz;wh; (porzaight 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 f6h8p2foeh(w c;ms gz* k3f r;zield must be