It was stated that the electric field concept arose in an effort to explain action-at-a-distance forces. All charged objects create an electric field that extends outward into the space that surrounds it. The charge alters that space, causing any other charged object that enters the space to be affected by this field.

Electric field is a vector quantity whose direction is defined as the direction that a positive test charge would be pushed when placed in the field. Thus, the electric field direction about a positive source charge is always directed away from the positive source.

A capacitor is a device that is used to store charges in an electrical circuit. A capacitor works on the principle that the capacitance of a conductor increases appreciably when an earthed conductor is brought near it. Hence, a capacitor has two plates separated by a distance having equal and opposite charges.

As a result, if the field lines are close together (that is, the field line density is greater), this indicates that the magnitude of the field is large at that point. If the field lines are far apart at the cross-section, this indicates the magnitude of the field is small.

Electric field lines represent the path which an electric charge must follow when it is in the influence of an Electric field. Since an atom doesn’t contain infinite no. of charged particles, hence field lines are never infinite.

3 Answers. So there is no infinity. In two dimensions (or in one), the electric field falls off only like 1r so the potential energy is infinite, and objects thrown apart get infinite speed in the analogous two-dimensional situation.

Magnetic fields can be pictorially represented by magnetic field lines, the properties of which are as follows:

• The field is tangent to the magnetic field line.
• Field strength is proportional to the line density.
• Field lines cannot cross.
• Field lines are continuous loops.