Energy in the Electric Field: A tiny particle carries a charge of 6.0 ?C. What is the energy density in the electric field at a distance of 4.0 m from this charge? (?0 = 8.85 × 10-12 C2/N ? m2, k = 1/4??0 = 9.0 × 109 N ? m2/C2)
A. 0.050 mJ/m3
B. 0.20 mJ/m3
C. 0.81 mJ/m3
D. 3.2 mJ/m3
Answer: A
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