A spherical, non-conducting shell of inner radius r 1 = 10 cm and outer radius r 2= 15 cm carries a total charge Q = 15 μC distributed uniformly throughout the volume of the shell. What is the magnitude of the electric field at a distance r = 12 cm from the center of the shell? (k = 1/4πε 0 = 8.99 × 109 N · m2/C2) A spherical, non-conducting shell of inner radius r 1 = 10 cm and outer radius r 2= 15 cm carries a total charge Q = 15 μC distributed uniformly throughout the volume of the shell. What is the magnitude of the electric field at a distance r = 12 cm from the center of the shell? (k = 1/4πε 0 = 8.99 × 109 N · m2/C2)

a-zero

b-5.75 × 10⁶ N/C

c-5.75 × 10³ N/C

d-2.87 × 10⁶ N/C

e-2.87 × 10³ N/C