An Electromagnetic Wave Is Made Up of Which of the Following

question 14

Multiple Choice

An electromagnetic wave is made up of which of the following oscillating quantities?

• A)electrons only
• B)electric fields only
• C)magnetic fields only
• D)electric and magnetic fields

---

Definitions:

Law of Diminishing Returns

An economic principle stating that, holding all else constant, as one input variable to the production process is increased, there comes a point when the added output from each additional unit of input decreases.

Productive

refers to the capability of producing significant amounts of goods and services, or contributing to economic output efficiently.

Intelligence

The ability to learn, understand, and make judgments or have opinions that are based on reason.

Variable Costs

Expenses that change in proportion to the activity of a business, such as costs for raw materials or production labor.