The Length of a Certain Wire Is Doubled and at the Same

question 57

Multiple Choice

The length of a certain wire is doubled and at the same time its radius is tripled. What is the change in the resistance of this wire?

• A) It stays the same.
• B) It is reduced by a factor of 4.5.
• C) It is doubled.
• D) It is tripled.
• E) It is quadrupled.

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Definitions:

Fixed Cost

Expenses that do not vary with the level of output or sales, such as rent, salaries, or insurance premiums.

Variable Cost

Expenses that vary in proportion to the volume of goods or services produced in a business.

Opportunity Cost

The forfeiture of potential benefits from other options by selecting a specific one.

Fixed Costs

Business expenses that remain constant regardless of the level of production or sales activities, such as rent, salaries, and insurance.