The Axis of a Long Hollow Metallic Cylinder (Inner Radius

Multiple Choice

The axis of a long hollow metallic cylinder (inner radius = 1.0 cm,outer radius = 2.0 cm) coincides with a long wire.The wire has a linear charge density of -8.0 pC/m,and the cylinder has a net charge per unit length of -4.0 pC/m.Determine the magnitude of the electric field 3.0 cm from the axis.

A) 5.4 N/C
B) 7.2 N/C
C) 4.3 N/C
D) 3.6 N/C
E) 2.4 N/C