Please explain why these are correct

21. The diagram below shows the equipotential lines in a region of space containing a uniform electric field. Assume only electrical forces are acting in this region. If a negatively charged particle is released at point A ... OV 1V 2V 3V 4V SV 0m 1m 2m 3m 4 m 5 m A, It will accelerate towards point B B. It will accelerate away from point B C. It will move towards point B at a constant velocity D. It will move away from point B at a constant velocity E. It will stay in place 22. The electric potential is measured 10 meters away from a small particle. The potential there is measured to be 90 Volts. What is the charge of the particle? A. 1 x 10-4 C B. 1 x 10-6 C 1 x 10- C D. 1 x 10* C E. 1 x 10-9 C 23. A region of space contains a uniform electric field which points to the right everywhere with a magnitude of 5 V/m (only one field vector is drawn for clarity, but the field is the same at all points). How would the potential energy of a 2 mC charge change if it were moved from the origin (coordinates 0,0) to point p (coordinates 16m, 12m)? A. The PE would increase by 0.16 J B. The PE would increase by 0.12 J E = 5 V/m C. The PE would decrease by 0.16 J (uniform everywhere) D. The PE would decrease by 0.12 J E. The PE would decrease by 0.20 J p: (x = 16m,y = 12m) (0m, Om)