The electric field at the point P is a measure of the force experienced by a positive test charge placed at that point in an electric field. It is a vector quantity and is represented by the symbol E.
The electric field at the point P is calculated by dividing the force acting on the test charge by the magnitude of the charge itself. It can also be calculated by taking the product of the electric field intensity and the cosine of the angle between the direction of the electric field and the direction of the test charge.
The electric field at the point P is affected by the magnitude and direction of the source charge, as well as the distance between the source charge and the point P. It is also affected by the presence of other charges in the surrounding area.
The electric field at the point P is measured in newtons per coulomb (N/C) in the SI unit system. In the CGS unit system, it is measured in dynes per esu (dyne/esu).
The electric field direction at the point P is determined by the direction of the force acting on a positive test charge placed at that point. It is always directed away from a positive source charge and towards a negative source charge.