A proton is released from rest in a uniform electric field of magnitude 1.5 x 10' V/m di- rected along the positive a axis. The proton undergoes a displacement of 0.3 m in the di- rection of the electric field as shown in the figure. 1.5 x 10 V/m 0 VO ++ + ++++++++ 0.3 m B Find the change in the electric potential if the proton moves from the point A to B. The mass of a proton is 1.672623 x 10-27 kg. Answer in units of V