State the properties of electric lines of
force.
Answers
(1) The electric lines of force start from a positive charge and end on a negative charge.
(2) The number of lines of force per unit area of the surface held perpendicular to the electric field is proportional to the magnitude of the electric field intensity there.
(3) The tangent drawn to a line of force at any point gives the direction of the electric field intensity at that point
(4) The lines of force neither intersect nor meet each other.
(5) The lines of force do not pass through a conductor, but they can pass through a dielectric, i.e., nonconducting medium.
(6) The lines of force are crowded in a region where the intensity of electric field is large. They are widely separated in a region where the intensity is small
(7) In a nonuniform electric field, the lines of force are curved. In a uniform electric field, lines of force are straight lines, parallel to each other and equidistant.
(8) The lines of force are always perpendicular to the surface of a charged conductor.