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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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About Current Electricity

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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