Give four properties of electric lines of force.
Or.
Give important properties of electric lines of forces.

Explanation

Properties of electric lines of force.
(i) the lines of electric force start from a positive charge and end on a negative charge.
(ii) The lines of force touch the surface on the conductor, where they either start from one end always at right angle.
(iii) The lines of force never cut each other. if two lines of force intersect at a point, it will mean two directions of electric instensity at that point which is evidently not possible.
(iv) The lines of force contract lengthwise. this explain attraction between opposite charges.
(v) Two lines of force mutually repel each other when they proceed in the same direction i.e. they exert a lateral repulsion. this explains the repulsion between similar charges.
(vi) The density or relative closeness is an indication of relative strength of field in various regions.