Sheets of Charge: a Charge Q Is Uniformly Spread Over

question 37

Multiple Choice

Sheets of charge: A charge Q is uniformly spread over one surface of a very large nonconducting square elastic sheet having sides of length d. At a point P that is 1.25 cm outside the sheet, the magnitude of the electric field due to the sheet is E. If the sheet is now stretched so that its sides have length 2d, what is the magnitude of the electric field at P?

• A) 4E
• B) 2E
• C) E
• D) E/2
• E) E/4

---

Definitions:

Pigovian Tax

A tax or charge levied on the production of a product that generates negative externalities. If set correctly, the tax will precisely offset the overallocation (overproduction) generated by the negative externality.

Clean Up

The process of removing contaminants, waste, or undesirable items from an area, thus restoring it to its original or acceptable condition.

Moral Hazard

The situation where one party takes on risk because they know that another party will bear the consequences.

Adverse Selection

A situation in insurance and markets where higher-risk individuals are more likely to select and use insurance or services, potentially leading to market inefficiencies.