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

question 4

Multiple Choice

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 4.0 cm from the symmetry axis of the two surfaces.

• A)0.45 kN/C
• B)1.0 kN/C
• C)0.73 kN/C
• D)0.56 kN/C
• E)2.3 kN/C

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