A Nichrome Wire and an Aluminum Wire,each with the Same $\rho$

question 26

Multiple Choice

A nichrome wire and an aluminum wire,each with the same initial resistance,have the same change in resistance when heated separately.( $\rho$ _Al = 2.82 *10 ^{- 8} $\Omega$ .m; $\alpha$ _Al = 3.9 *10 ^{- 3} / $\degree$ C; $\rho$ _nichrome = 1.50* 10 ^{- 6} $\Omega$ .m; $\alpha$ _nichrome = 0.40 * 10 ^{- 3} / $\degree$ 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.

---

Definitions:

Average Variable Cost

The variable cost per unit of output, calculated by dividing total variable costs by the total output.

Total Fixed Costs

The total of all expenses that do not change with the amount of production or level of business operations.

Equilibrium Level

The state in which market supply and demand balance each other, resulting in stable prices.

Total Costs

The sum of all expenses a firm incurs to produce and sell a product, including both fixed and variable costs.