question_answer

Directions: (31-35)

Relation Between Strength of Electric Field and Density of Lines of Force

Electric field strength is proportional to the density of lines of force i.e., electric field strength at a point is proportional to the number of lines of force cutting a unit area element placed normal to the field at that point.

As illustrated in the given figure, the electric field at P is stronger that at Q.

Electric lines of force about a positive point charge are

A) radially outwards

B) circular clockwise

C) radially inwards

D) parallel straight lines.