The properties of electric lines of force are:
The field lines never cross one another.
The field lines run perpendicular to the charge’s surface.
Both the amount of the charge and the number of field lines are proportional.
The field lines begin with the positive charge and conclude with the negative charge.
A single charge must be used to start or finish the field lines at infinity.
Final answer:
Hence, the properties of electric lines of force are stated above.