Part A The field of the uniformly charged straight wire of length & at point P, a perpendicular distance x from its midpoint, is given by Use this result to find the electric field (magnitude) a distance z above the center of a square loop of wire, each of whose sides has length / and uniform charge per length > (see the figure).( E = 2TEO Figure 1 z ( e2 + 4 2 2 ) 2 where ) is the charge per unit length. Express your answer in terms of the variables 1, 1, z, and appropriate constants. ? E( z) = 12 TE 4 (R + 272) Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B Find the direction of the electric field. Figure