Electric Field Lines: Electric field lines are visual representations used to depict the direction and strength of an electric field around charged objects. They show how positive test charges would move if placed in different locations.
Coulomb's Law: Coulomb's Law states that there is an attractive or repulsive force between two charged objects, directly proportional to their charges and inversely proportional to the square of their distance apart.
Point Charge: A point charge is an idealized concept representing a charged object with negligible size. It simplifies calculations and allows us to analyze the electric field around a single charge.