A. State whether each of the following vector fields could describe a static electric field? Show your reasoning for each. (i) E(r) = xx yu (ii) E(F) = yx + xy (iii) E(7) = yx - xy B. Calculate the path integral of field (iii) around a square in the x, y plane with sides of length a with its bottom left corner at (x, y) = (0, 0)