By What Factor Is the Resistance of a Copper Wire

question 83

Multiple Choice

By what factor is the resistance of a copper wire changed when its temperature is increased from 35°C to 110°C? The temperature coefficient of resistivity for copper = 3.9 × 10−³ (°C) −¹.

• A) 1.43
• B) 1.14
• C) 1.29
• D) 0.71
• E) ​3.93

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