Question

Select all the TRUE statements regarding electric field lines : A. Electric field lines can never cross over one another B. The motion of a charged particle will always follow exactly on a field line C. Field lines can exist in regions of space where there are no charges D. The density of field lines at a point is proportional to the strength of the electric field E. The density of field lines at a point is proportional to the charge density at that point

Answer 1

Answer:

a. True

b. True

c. False

d. True

e. True

Explanation:

a. The electric field line do not cross each other and if they did, it would mean that the electric field would point in different directions at the same point which does not make sense. The line of force are straight, parallel and uniformly spaced.

b. The line of force indicate the direction of the electric field, therefore, the motion of the charge particles will always follow the line of force.

c. The line of force start from a positive charge only and end on negative charge only. So if this is the condition then field lines cannot exist in regions of space where their is no charges.

d. The closer the lines of field, the stronger the electric field.