A charge of 0.80 nC is placed at the center of a cube that measures 4.0 m along each edge. What is the electric flux through one face of the cube?
A. 90 N ? m2/C
B. 15 N ? m2/C
C. 45 N ? m2/C
D. 23 N ? m2/C
E. 64 N ? m2/C
Answer: B
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