how to find net field easily?

To find the Net electric field we take a vector some of all electric fields.

Electric field has a vector nature.The magnitude or strength of an electric field in the space surrounding a source charge is related directly to the quantity of charge on the source charge and inversely to the distance from the source charge. The direction of the electric field is always directed in the direction that a positive test charge would be pushed or pulled if placed in the space surrounding the source charge. Since electric field is a vector quantity, it can be represented by a vector arrow. For any given location, the arrows point in the direction of the electric field and their length is proportional to the strength of the electric field at that location.the lengths of the arrows are longer when closer to the source charge and shorter when further from the source charge.