1. Determina la fuerza eléctrica entre dos cargas para cada inciso y anota si se trata de fuerza atractiva o repulsiva. a) q,--7C y 9, = 124C separadas 85 cm
b) 4.-25mC y 9, = 30mC separadas 2.3m
c) 4.-15C y 9,=-1.8nC separadas 1.75m​

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