Very large capacitors have been considered as a means for storing electrical energy. If we constructed a very large parallel-plate capacitor of plate area 10 m2 using paper (k = 3.7) of thickness 1.0 mm as a dielectric, how much electrical energy would it store at a plate voltage of 5000 V? (e0 = 8.85 × 10^-12 C2/N×m2)
a. 4.1 J
c. 0.41 J
b. 8200 J
d. 82,000 J
A
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