Two Very Long Parallel Wires in the Xy-Plane, a Distance

question 10

Multiple Choice

Two very long parallel wires in the xy-plane, a distance 2a apart, are parallel to the y-axis and carry equal currents I as shown in the figure. The +z direction points perpendicular to the xy-plane in a right-handed coordinate system. If both currents flow in the +y direction, which one of the graphs shown in the figure below best represents the z component of the net magnetic field, in the xy-plane, as a function of x? (Caution: These graphs are not magnetic field lines.)

• A) 1
• B) 2
• C) 3
• D) 4
• E) 5

---

Definitions:

Chattels

Personal property or movable possessions, as opposed to real property which includes land and buildings.

Intangible Property

Assets that do not have a physical presence yet hold value, such as intellectual property, copyrights, patents, and trademarks.

Chose in Action

A personal right to property which can only be claimed or enforced through legal action, not by taking physical possession.

Intellectual Property

Refers to creations of the mind, such as inventions; literary and artistic works; designs; and symbols, names, and images used in commerce.