Solve the all parts of given question:
Question: Charge of 16 nC is distributed uniformly along the circular hoop of radius equal to R.
Part A: Find an integral expression ('s) for the electric field of the x axis at x=d. (Do not integrate).
Part B: For the same charge configuration above find the absolute electrostatic potential at the point x=d.
Having trouble with this physics question, can you please explain with the answer.