Electric Lines of Force & its Properties

Electric Lines of force :

The line of force in an electric field is a curve such that the tangent at any point on it gives the direction of the resultant electric field strength at that point.

These imaginary lines give us a method of representing any electric field on a diagram.

It has been found quite convenient to visualize the electric field pattern in terms of lines of force. The electric field pattern vector at a point is related to imaginary lines of force in two ways. The line of force in an electric field is a curve such that the tangent at any point on it gives the direction of the resultant electric field strength at that point. Electric lines of force have following properties

Properties of Electric Lines of Force:

(i) Tangent to the line of force at a point gives the direction of Electric field .

(ii) These lines of force are so drawn that their number per unit cross-sectional area in a region is proportional to intensity of electric field.

(iii) Electrostatic lines of force can never form closed loops.

(iv) Lines of force are imaginary.

(v) They emerge from a positive charge and terminate on negative charges.

(vi) Lines of force do not intersect.

Note: When a conductor has a net charge that is at rest, the charge reside entirely on the conductor’s surface and the electric field is zero everywhere within the material of the conductor.

Also Read :

→ Charging of the body & Properties of Charge
→ Coulom’s Law in Electrostatics
→ Principle of superpostion
→ Electric field
→ Electric Potential Energy
→ Electric Potential
→ Equipotential Surface , Relation b/w Electric field & Potential
→ Electric Dipole , Dipole Moment & Electric Field due to Dipole
→ Electric Flux , Gauss’ Law & Applications of Gauss’s Law
→ Charge appearing on the Surface of Plates
→ Mechanical Force & Electric Pressure on a Charged Surface

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