Which of the following have the same temperature coefficient of resistivity?
Correct answer: C. Iron and platinum
- A. Iron and silver
- B. Platinum and silver
- C. Iron and platinum
- D. silver and gold
Explanation
Temperature coefficient of resistivity of platinum is 0.00520, while the temperature coefficient of resistivity of iron is 0.00520. This shows that the resistance of platinum and silver increase by the same percentage for every 1 degree Celsius increase in temperature.
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