Charge of uniform density (20 nC/m2) is distributed over a cylindrical surface (radius = 1.0 cm), and a second coaxial surface (radius = 3.0 cm) carries a uniform charge density of -12 nC/m2.Determine the magnitude of the electric field at a point 2.0 cm from the symmetry axis of the two surfaces.
A)2.3 kN/C
B)1.1 kN/C
C)1.7 kN/C
D)3.4 kN/C
E)4.5 kN/C

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The Answer of Charge of uniform density (20 nC/m2) is distributed over a cylindrical surface (radius = 1.0 cm), and a second coaxial surface (radius = 3.0 cm) carries a uniform charge density of -12 nC/m2.Determine the magnitude of the electric field at a point 2.0 cm from the symmetry axis of the two surfaces.
A)2.3 kN/C
B)1.1 kN/C
C)1.7 kN/C
D)3.4 kN/C
E)4.5 kN/C

Charge of Uniform Density (20 NC/m2) Is Distributed Over a Cylindrical