A Metal Wire Has a Resistance of 25

question 33

Multiple Choice

A metal wire has a resistance of 25.00 Ω under room temperature conditions of 25°C.When the wire is heated to 85°C the resistance increases by 1.95 Ω.What is the temperature coefficient of resistivity of this metal?

• A) 1.3 × 10−³ (°C)−¹
• B) 1.5 × 10−³ (°C)−¹
• C) 5.0 × 10−⁴ (°C)−¹
• D) 2.5 × 10−³ (°C)−¹

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Definitions:

Direct Labor-Hours

The total hours of labor directly involved in the production of goods.

Activity-Based Costing

A costing methodology that assigns overhead and indirect costs to specific products or services based on the activities that contribute to these costs.

Overhead

The indirect costs of running a business that cannot be directly linked to a specific product or service, such as utilities, rent, and administrative expenses.

Activity Rate

The predetermined overhead rate used in activity-based costing to assign overhead costs to products or services based on a specific activity.