What is the resistance of a 3.5 m copper wire (p = 1.7 x 10^-8 Ohm·m) that 1 point has a cross-sectional area A of 5.26 x 10^-6 m^2? Use the equation below. *
PL
R=
A
P = resistivity
L = length
A = cross sectional area
9.2 x 10^-4 ohms
ОО
4.1 x 10^-3 ohms
1.1x 10^-2 ohms
1.1 x 10^3 ohms

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