Page 20 - Electrostatics 11

Grade 11 © GC Shiba
☻ The tangent at any point on the lines of force gives the direction of the

resultant electric field intensity at that point.

E

E

Fig. Electric field along tangent at line of force

☻ They are like stretched elastic strings which tend to contract lengthwise and
repel sidewise.

Fig. Lines of force for unlike charges Fig. Lines of force for like charges

☻ Two electric lines of forces never intersect. If
they intersect each other, there must be two
directions of electric field intensity at the point
of intersection which is impossible.

20 Electrostatics