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But these particular lines are not *beginning* on a positive
point charge. The termination is not the point of the posting
(I should not have mentioned it - just confuses the issue).
Bob at PC
+q, one placed
However assuming that the charge of the universe is zero, they would
eventually terminate or start on a charge.
John M. Clement
Houston, TX
Consider a configuration of two point charges of value
vector points inon the x axis of a standard x-y-z coordinate system at +a and the
other at -a. Now look at the electric field vectors - specifically
along the y axis.
For any position along the positive y axis the field
y = 0, and asthe positive y direction. The field magnitude is zero at
vector points iny increases, grows and forms a maximum at y = 0.707 a, and then
gradually goes to zero as y increases further in value. One could
trace a field line starting at y=0, x=0 and follow it along the
positive y axis to positive infinity.
For any position along the negative y axis the field
y = 0, and asthe negative y direction. The field magnitude is zero at
usual maxim ofy decreases, grows and forms a maximum at y = -0.707 a, and then
gradually goes to zero as y increases further in value. One could
trace a field line starting at y=0, x=0 and follow it along the
negative y axis to negative infinity.
Here is a pair of field lines that do not follow the
_______________________________________________starting and stopping on a charge.
Bob at PC
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