A long cylindrical shell (radius = 2.0 cm) has a charge uniformly distributed on its surface. If the magnitude of the electric field at a point 8.0 cm radially outward from the axis of the shell is 85 N/C, how much charge is distributed on a 2.0-m length of the charged cylindrical surface?
A. 0.38 nC
B. 0.76 nC
C. 0.19 nC
D. 0.57 nC
E. 0.98 nC
Answer: B
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