5a. Find the electric eld at a point P at a distance 2 above the center of the ring. Show these key steps: i. Find do in terms of k1 Q, R and ds ONLY. ii. Find the magnitude of dE at point P in terms of k, Q, R, z and ds ONLY. iii. Determine the component of dE that would not vanish. Write that component in terms of dE, z and R ONLY. iv. Set up an integral and nd E. 5b. Find the potential at point P. Show these key steps: i. Find the magnitude of dV at point P in terms of k, Q, R, z and ds ONLY. ii. Set up an integral and find V.5c. With help of the result of part a, nd the electric eld at point P in terms of 2, RD, OD and appropriate known constants. Show these key steps: i. Break down the disk into concentric rings of charge do and radius R. Express do in terms of R, dR, RD and sigma_0 ONLY. ii. Integrate dq obtained in (i) to nd QB in terms of sigma_0 and RD ONLY. iii. Using the result of part a, nd dE at P in terms of k, 2, R and do ONLY. iv. Set up the integral to nd E in terms of k, Op, 2, RD, R and dR ONLY. No need to evaluate the integral. 5. A uniformly charged ring has a total charge of Q and radius R. OP Z R QConsider a solid disk of radius RD and total charge On which has a surface charge density function sigmaiR) = sigma [1 + (R2 / R52\