(A)

(B)

(C)

(D)


Figure $2 - 3$

question 14

Multiple Choice

(a)

(b)

(c)

(d)


Figure $2 - 3$
-Which of the following is not a type of variable resistor?

• A)photoconductive cell
• B)thermistor
• C)potentiometer
• D)All are types ofV Ariable resistors.

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Definitions:

Unit Price

The cost per unit of quantity of a product, allowing consumers to compare prices between different sized packages of the same item.

Competitive Firm

A business that operates in a market where it must compete against other firms for customers and resources.

Economic Profit

The difference between a firm's total revenues and its total costs, including both explicit and implicit costs, representing the additional gain above the next best alternative investment.

Marginal Revenue

The rise in income generated by selling an extra unit of a product or service.