Very Large Capacitors Have Been Considered as a Means for Storing

question 51

Multiple Choice

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 1.0 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 5 000 V? (e₀ = 8.85 x 10^-12 C²/N*m²)

• A)0.41 J
• B)90 J
• C)9 000 J
• D)45 000 J

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