An Ideal Parallel-Plate Capacitor Having Circular Plates of Diameter D

question 25

Multiple Choice

An ideal parallel-plate capacitor having circular plates of diameter D that are a distance d apart stores energy U when it is connected across a fixed potential difference.If you want to triple the amount of energy stored in this capacitor by changing only the size of its plates,the diameter should be changed to

• A)9D.
• B)3D.
• C)D .
• D) .
• E) .

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Definitions:

Rent

A periodic payment made by tenants to landlords for the use of land, a building, or other property.

Supply Curve

A curve that illustrates the supply for a product by showing how each possible price (on the vertical axis) is associated with a specific quantity supplied (on the horizontal axis).

Demand Curve

The demand curve is a graphical representation showing the relationship between the price of a good or service and the quantity demanded for a given period.

Economic Rent

Extra earnings above the minimum amount necessary for a resource to remain in its current use, often arising from scarcity or market control.