An Infinitely Long Cylindrical Shell of Radius 6 $\sigma$ = 12 NC/m²

Multiple Choice

An infinitely long cylindrical shell of radius 6.0 cm carries a uniform surface charge density $\sigma$ = 12 nC/m².The electric field at r = 10 cm is approximately

A) 12 kN/C
B) 0.56 kN/C
C) 1.3 kN/C
D) 0.81 kN/C
E) zero