Problem 3 (Exam Practice Problem) The electric field in a region of space is given by: Ex. y.) = (Ar + B:)i + (By+A:)j + (C+A:) k coordinates are in metres and A = 1.5 V m, B = 0.45 V m, and where the r. y, and C=-15 V m , Find The change in electrical potential when moving along the z-axis from = 5.0 m to x = 1.0 m. END