Please solve complete problem. I need complete step by step solution. Course: Electromagnetic Theory

Question (3) 45 points A loop described by X2 + Y2 = a? is placed on Z = 0 plane, carries a charge density Pr C/m. (a) Derive an expression for the electric flux density D at point (0, 0, h). (b) For pi= 10 uC/m, a = 3, h= 5 find the position of additional charge Q = 10 mc, such that the total electric field E at (0, 0, 5) due to the loop and the charge Qis = 0