electric field

The concept of the electric field was introduced by Michael Faraday. . The electric field acts between two charges in a similar manner( in the same way ). to the way that the gravitational field acts between two masses, and like it, extends towards infinity and shows an inverse square relationship with distance. However, there is an important difference. while the electric field can result in either attraction or repulsion. Since large bodies carry no net charge. the electric field at a distance is usuallyequal null(0). Thus gravity is the dominant force at distance in the universe, despite being much weaker.we should notice that :
the electric field is the main reason for discovering the generation because when the mass cut amagnetic field an electric field is setting up during this process . we cant dent the main role of the electrical field in our life we use it in several ways such as light,fuel of many machines and instead of crude oil .

Field lines emanating from a positive charge above a plane conductor
An electric field generally varies in space, and its strength at any one point is defined as the force that would be felt by a stationary, negligible charge if placed at that point.The conceptual charge, termed a 'test charge', must be vanishingly small to prevent its own electric field disturbing the main field and must also be stationary to prevent the effect of magnetic fields. As the electric field is defined in terms of force, and force is a vector, so it follows that an electric field is also a vector, having both magnitude and direction. Specifically, it is a vector field.
The study of electric fields created by stationary charges is called electrostatics. The field may be visualised by a set of imaginary lines whose direction at any point is the same as that of the field. This concept was introduced by Faraday, whose term 'lines of force' still sometimes sees use. The field lines are the paths that a point positive charge would seek to make as it was forced to move within the field; they are however an imaginary concept with no physical existence, and the field permeates all the intervening space between the lines. Field lines emanating from stationary charges have several properties:(1)
that they originate at positive charges and terminate at negative charges; second, that they must enter any good conductor at right angles, and third, that they may never cross nor close in on themselves.
A hollow conducting body carries all its charge on its outer surface.