A 5.0-nC point charge is embedded at the center of a nonconducting sphere (radius = 2.0 cm) which has a charge of -8.0 nC distributed uniformly throughout its volume. What is the magnitude of the electric field at a point that is 1.0 cm from the center of the sphere?
a. 1.8 × 10^5 N/C
b. 9.0 × 10^4 N/C
c. 3.6 × 10^5 N/C
d. 2.7 × 10^5 N/C
e. 7.2 × 10^5 N/C
C
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