The field lines associated with a uniform electric field in a region of space are shown in the attached figure. Imagine drawing two equipotentials in...

The field lines associated with a uniform electric field in a region of space are shown in the attached figure. Imagine drawing two equipotentials in the plane of the figure, one passing through point A and and one passing through point B. If the electric field is 400 N/C, how much does the potential change in going from A to B? Provide your answer in volts and use a positive value if it increases and a negative value if it decreases.