Spheres of Charge: A spherical conductor of radius 2.0 mm carries a charge of 7.1 nC. What is the magnitude of the electrical field at 6.0 mm from the center of the sphere? (k = 1/4??0 = 9.0 × 109 N ? m2/C2)
A. 25 × 106 N/C
B. 89 × 106 N/C
C. 1.8 × 106 N/C
D. 780 × 106 N/C
E. 0.89 × 106 N/C
Answer: C
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