In the presence of an electrically neutral object, electric field lines can exhibit a phenomenon known as distortion. The electric field lines approaching the neutral object may bend or change direction due to the influence of induced charges on the surface of the object. These induced charges arise because of the electric field created by nearby charged bodies. Though the object remains overall neutral, a separation of charge occurs on its surface, leading to the redistribution of electric field lines around the object, a crucial concept in understanding shielding and grounding in electrical contexts.

Electric field lines, in theory, extend indefinitely in space, but for practical and visual purposes, they are often depicted as finite. In the context of positive charges, field lines originate and extend outwards, suggesting an infinite reach. For negative charges, field lines appear to begin at infinity and converge towards the charge. However, in real-world applications and studies, the strength of the electric field diminishes with distance, and beyond a certain point, its effect is negligible. Thus, field lines are often illustrated with finite lengths to focus on regions where the electric field has a significant impact.

The concept of electric field lines finds extensive application in technology and daily life, serving as a visual tool for understanding and manipulating electric fields. In technology, it’s instrumental in the design of electronic components and circuits, ensuring optimal performance and safety. For example, in cathode ray tubes in older television sets and computer monitors, understanding electric field lines is crucial for directing electron beams accurately. In everyday life, the concept aids in understanding phenomena like lightning, where the electric field lines between the cloud and the ground illustrate the path of the electrical discharge.

Electric field lines never cross each other because each line represents a unique path along which a positive test charge would move under the influence of the electric field. If the lines were to cross, it would imply that a test charge placed at the intersection point would experience forces in multiple directions simultaneously, which is physically impossible. Thus, the non-crossing nature of electric field lines ensures clarity in depicting the directional nature and strength of electric fields at every point in space around electric charges.

In the vicinity of point charges, electric field lines are radial, meaning they emanate outward from positive charges and converge inward towards negative charges in a spherical pattern. The field is stronger and the lines denser closer to the charge. In contrast, near larger charged bodies like plates, the field lines are more uniform and parallel, indicating a consistent electric field strength across the surface. This distinction aids in understanding the behaviour of charged particles in various configurations, essential for applications like capacitors where uniform electric fields are desired.