Consider the field lines of the electric dipole in this diagram, relative to the w-axis and the z-axis. 
In which direction does the electric field point where the two axes intersect?
A. 45° up and to the right, parallel to the z-axis: 
B. 45° down and to the left, parallel to the z-axis: 
C. 45° down and to the right, parallel to the w-axis: 
D. 45° up and to the left, parallel to the w-axis: 
Answer: D
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