Uniform electric field.
A uniform electric field has the same intensity (both in magnitude and direction) at all points in it. Therefore, the electric field vectors at all the points must be of the same length and point in the same direction. Hence a uniform field is represented by a set of parallel lines pointing in the same direction.
A non-uniform field is that in which electric intensity is different at different parts, either in magnitude or direction or both.
A uniform and a non-uniform electric field are represented by the lines of force as shown in figures (a) and (b) respectively.
