well, electric field lines always point away from positive charges direct toward negative charges. since electric field is defined as
field lines do not mean much physically, it is just a visual interpretations of things. relatively speaking, field lines sort of represent "electric field density" (dont take it too literally). the closer the field lines are, the greater the electric field(magnitude). the thing is, lets say you have a positive charge and you want to draw the field lines around it. You can draw 10, 5, 20, or 100 field lines, it wouldn't matter, you will always end having having less field lines further away from the charge (lesser electric field magnitude). its just for visual interpretations.
these field lines are good for understanding certain theories, like gauss's law. (the number of field lines going out an enclosed area - the number of fields lines going in this enclosed area are directly proportional to the charge enclosed--this is gauss law in terms of "field lines").
