When gravitational, magnetic and any forces other than static electric forces are not present, electric field lines in the space surrounding a charge distribution show
A. the directions of the forces that exist in space at all times.
B. only the directions in which static charges would accelerate when at points on those lines
C. only the directions in which moving charges would accelerate when at points on those lines.
D. tangents to the directions in which either static or moving charges would accelerate when passing through points on those lines.
E. the paths static or moving charges would take.
Answer: D
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