Question

Figure shows electric field lines around a conductor.
(a) At which of the four points is the field strongest?
(b) At which point there is negative charge?

Answer 1

(a) The field is strongest where the no. of field lines in a unit area are largest which happens at point C where there are more field lines in a small area.

(b) At D there is a negative charge since the field lines are converging towards that point.