A Transformer Changes the 10,000 V Power Line to 120

question 16

Multiple Choice

A transformer changes the 10,000 V power line to 120 V. If the primary coil contains 750 turns, how many turns are on the secondary?

• A)3
• B)0
• C)9
• D)6.3 × 10⁴
• E)2.1 × 10⁴

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Definitions:

Perfectly Competitive Firm

A company that cannot control market prices and must therefore accept the prevailing market price for its products or services.

Short-run

A period in economics during which some factors of production or inputs are fixed, unable to be changed to respond to market conditions.

Marginal Revenue Curve

A graphical representation that shows how much additional revenue a firm will make by selling one more unit of a product.

Perfectly Competitive Firm

A company operating in a market where there are many sellers and buyers, the product is homogeneous, and there are no barriers to entry or exit.