Which of the following is not an example of a flow variable?
A) The amount of income that a person earns each month
B) The amount of interest that a savings account earns each week
C) The amount of money in a savings account
D) The amount of taxes that a person pays each year
E) All of these are flow variables

Question

Quizplus · Accepted Answer

A flow variable is one that measures the rate at which something is generated or used up over time. Options A, B, and D are all examples of flow variables because they measure a certain amount over a specific period of time (each month, each week, and each year, respectively). Option C, however, is not a flow variable because it measures a specific amount at a single point in time, rather than a rate of change over time.

Which of the Following Is Not an Example of a Flow