A copper wire has resistances 10 ohms and 20 ohms at temperature 0 C and 10 C respectively. What is the temperature coefficient of the copper wire?
Correct answer: A. 0.1 K-1
- A. 0.1 K-1
- B. 0.02 K-1
- C. 0.01 K-1
- D. 0.2 K-1
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Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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