A + 80-NC Point Charge Is Located in the Center of a of a Thick

Multiple Choice

A + 8.0-nC point charge is located in the center of a thick conducting spherical shell.The shell has an inner radius of 1.0 m,an outer radius of 1.2 m,and a charge of -3.0 nC.What is the magnitude of the electric field at r = 0.5 m?

A) 0 N/C
B) 110 N/C
C) 180 N/C
D) 200 N/C
E) 290 N/C