An Ideal Parallel-Plate Capacitor Having Circular Plates of Diameter D $\sqrt { 3 }$

question 50

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 \(\sqrt { 3 }\)
• D) \(\frac { D } { \sqrt { 3 } }\)
• E) \(\frac { D } { 3 }\)

---

Definitions:

Basis of the Bargain

The primary conditions and understandings that form the foundation of a contractual agreement.

Express Warranty

A written or verbal promise from a seller about the quality or performance of a product being sold.

Lifetime

The duration for which an entity, such as a product, organization, or individual, exists or is expected to function.

Express Warranty

An explicit promise by the seller regarding the quality, condition, or performance of the product being sold.