Question

Consider the situation of the previous problem. A charge of - 2.0 x 10^-4 C is moved from the point A to the point B. Find the change in electrical potential energy U_B - U_A for the cases (a), fa) and (c).

Answer 1

(a) The Electric field is along x-direction
Thus potential difference between (0, 0) and (4, 2) is,