An Air-Filled 3

question 33

Multiple Choice

An air-filled 3.0 nF capacitor is charged to 8.0 V. If the plate separation is 100 μm, what is the energy density in the electric field between the plates?

• A) 57 J/m³
• B) 280 J/m³
• C) 57 mJ/m³
• D) 28 mJ/m³
• E) more than 100 J/m³

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