In this problem, a very long metallic rod with a uniform circular cross section of radius 0.35 mm has a constant charge per unit length of 1.5x10^-8 C/m. A) Determine the electric field at a distance 0.20 mm from the longitudinal axis of the rod. (Possible answer: 0, 1.3 x 10^6 N/C, 1.8 x 10^6 N/C, 6.7 x 10^5 N/C, 7.7 x 10^5 N/C) B) Determine the electric field at a distance 0.50 mm from the longitudinal axis of the rod. (Possible answer: 0, 1.8 x 10^6 N/C, 7.7 x 10^5 N/C, 5.4 x 10^5 N/C, 3.2 x 10^5 N/C

The figure is a section of a conducting rod of radius R₁ = 1.50 mm and length L = 12.90 m inside a thin-walled coaxial conducting cylindrical shell of radius R₂ = 11.0R₁ and the (same) length L. The net charge on the rod is Q₁ +3.68 x 10-12 C; that on the shell is Q₂ = -2.30Q₁. What are the (a) magnitude E and (b) direction (radially inward or outward) of the electric field at radial distance r = 2.30R₂? What are (c) E and (d) the direction at r = 5.20R₁? What is the charge on the (e) interior and (f) exterior surface of the shell? (a) Number Units

A uniformly charged ring of radius 10.0 cm has a total charge of 56.0 ?C. Find the electric field on the axis of the ring at the following distances from the center of the ring. (Choose the x-axis to point along the axis of the ring.) 1.00 cm _________ î MN/C 5.00 cm _________ î MN/C 30.00 cm _________ î MN/C 100.00 cm _________ î MN/C

The electric field at a distance of 0.154 m from the surface of an insulating solid sphere of radius 0.385 m is 1970 N/C. Assuming that the charge on the sphere is uniformly distributed, a) what is the charge density within it? b) Calculate the electric field inside the sphere at a distance of 0.150 m from the center.