Two Very Long Parallel Wires in the Xy-Plane,a Distance 2a

question 3

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 the left current flows in the +y direction and the right current flows 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

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Definitions:

Inattentional Blindness

The failure to notice a fully visible but unexpected object because attention was engaged on another task, event, or object.

Dual Processing

Dual processing theory suggests that thought can arise in two different ways, or as a result of two different processes, often at the conscious and subconscious levels simultaneously.

Change Blindness

A perceptual phenomenon where a change in a visual stimulus goes unnoticed by the observer, indicating the limitations of human attention.

Text Messages

Written messages sent or received over a mobile phone network or the internet.