Find the magnitude of the electric field intensity at a distance 16.0 cm, from the axis of a long, straight conductor, which has a radius 3.64 cm, and a charge density of 1.76 C/m. N/C To derive the equation you used to solve the first part of this question what law did you use? Select one: O a. Newton's laws of motion b. Gauss's law O c. Ampere's law O d. Faraday's law What assumptions did you need to make when you used this equation? Select one: O a. The conductor is infinitely long. O b. The charges are moving quickly through the conductor. O c. The electric field drops to zero at a distance of 100 x the radius of the conductor