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Which one of the following does not have negative temperature coefficient?

Correct answer: A. Aluminium

  • A. Aluminium
  • B. Paper
  • C. Rubber
  • D. Mica

Explanation

In case of metals when we increase the temperature, the relative movement of the atoms as well the free electrons increase. Because of which there is more collisions and more loss of energy. Due to which the resistance increases and it gives a positive temperature coefficient of resistance for metals.

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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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