Consider two long parallel wires which are perpendicular to the plane of the pap
ID: 2121369 • Letter: C
Question
Consider two long parallel wires which are
perpendicular to the plane of the paper (i.e.,
the x-y plane). Both wires carry the same
current, I. Wire #1 intersects the plane a
distance a above point O and wire #2 intersects the plane a distance a below point O.
Point C is equidistant from both wires and is
a distance a from point O.
What is the direction of the magnetic %uFB01eld
at D?
1. in the positive x direction
2. in quadrant I
3. in the positive y direction
4. in quadrant II
5. in quadrant III
6. in the negative x direction
7. in the negative y direction
8. in quadrant IV
9. out of the plane
10. into the plane
Explanation / Answer
1. in the positive x direction