A uniform electric field has magnitude E and is directed in the negative x-direction. The potential difference between point a (at x = 0.65 m) and point b (at x = 0.87 m) is 200 V.
(a) Which point, a or b, is at the higher potential? point a point b
(b) Calculate the value of E. V/m (c) A negative point charge q = -0.180 µC is moved from b to a. Calculate the work done on the point charge by the electric field.