Each Plate of a Parallel-Plate Air-Filled Capacitor Has an Area $m ^ { 2 }$

question 71

Multiple Choice

Each plate of a parallel-plate air-filled capacitor has an area of 0.0040 $m ^ { 2 }$ , and the separation of the plates is $0.020 \mathrm {~mm} .$ An electric field of $8.2 \times 10 ^ { 6 } \mathrm {~N} / \mathrm { C }$ is present between the plates. What is the energy density in the region between the plates? (?₀ = 8.85 × 10^-12 C²/N ? m²)

• A)300 J/ \(m ^ { 3 }\)
• B)200 J/ \(m ^ { 3 }\)
• C)400 J/ \(m ^ { 3 }\)
• D)500 J/ \(m ^ { 3 }\)
• E)610 J/ \(m ^ { 3 }\)

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