Consider two long parallel wires which are perpendicular to the plane of the paper (1'.e., the :zr-y plane). Both wires carry the same current, I. Wire #1 intersects the plane a distance a above point 0 and wire #2 intersects the plane a distance a below point 0. Point O is equidistant from both wires and is a distance a from point 0. re)6) wire #1 1' 'y a II I 45" l a o (I? C 45 1'0 0 :3 III IV l (9 wire #2 (9)- D What is the direction of the magnetic eld at C? ll. oemqmmnwmw . out of the plane . in the negative 3; direction . in the negative a: direction . in quadrant II . in quadrant IV . in the positive :1: direction . into the plane . in the positive 3; direction . in quadrant I . in quadrant III What is the magnitude of the magnetic field at C? 1 pol 1. Bo = V2 a 1 po I 2. Bo = 2 a 1 Ho I 3. Bo = V2T a 1 Ho I 4. Bc = 2 TT a 1 Hol 5. Bo 4 TT a MO I 6. Bc TT r a 1 HO I 7. Bo = 21/2 a 8. Bo = 0 1 po I 9. Bo 4 a NO I 10. Bo = 2V/2 T a