Which choice most accurately describes how the structure of metals makes them good conductors? metals have a large number of tightly-bound electrons that allow for the movement of electrons through them. metals have a large number of free outer electrons that allow for the movement of electrons through them. metals have a large number of free protons that allow for the movement of protons through them. metals have a large amount of tightly-bound protons that allow for the movement of protons through them.

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c