A Nichrome Wire and an Aluminum Wire, Each with the Same

question 4

Multiple Choice

A nichrome wire and an aluminum wire, each with the same initial resistance, have the same change in resistance when heated separately. (ρAl = 2.82 × 10⁻⁸ Ω ⋅ m; αAl = 3.9 × 10⁻³ / °C; ρnichrome = 1.50 × 10−6 Ω ⋅ m; αnichrome = 0.40 × 10⁻³ / °C.) The ratio of the temperature change of the nichrome wire to the temperature change of the aluminum wire is

• A)0.019.
• B)0.10.
• C)0.18.
• D)9.8.
• E)53.

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Average Revenue

The average amount of money received by a firm per unit of output sold, calculated by dividing the total revenue by the number of units sold.

Marginal Cost

The uptick in price resulting from the manufacture of an extra unit of a good or service.

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A company that is the sole provider of a product or service in a market, facing no competition.

Profit

The financial gain obtained when the revenues generated from business activities exceed the expenses, taxes, and costs.