Very Large Capacitors Have Been Considered as a Means for Storing

question 22

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 10 m² using paper (κ = 3.7) of thickness 1.0 mm as a dielectric,how much electrical energy would it store at a plate voltage of 5000 V? (ε₀ = 8.85 × 10−¹² C²/N⋅m²)

• A) 4.1 J
• B) 8200 J
• C) 0.41 J
• D) 82,000 J

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Definitions:

Competitive Market

A market structure characterized by a large number of buyers and sellers where no single participant can significantly influence price.

MRP of Labor

Marginal Revenue Product of Labor; the additional revenue generated by employing one more unit of labor.

Monopsonist

A market condition where there is only one buyer for a particular product or service, giving that buyer significant power over prices.

Marginal Resource Cost

The additional cost incurred by acquiring one more unit of a resource, such as labor or capital.