The temperature coefficient of a normal conductor is positive because:
Correct answer: A. Resistance increases with increase of temperature
- A. Resistance increases with increase of temperature
- B. Resistance decreases with increase of temperature
- C. Resistance decreases with decrease of temperature
- D. Resistance remains same with increase of temperature
Explanation
When resistance increase with an increase in temperature, the material is said to have a positive temperature coefficient.
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About Temperature Coefficient of Resistivity
Temperature coefficient of resistivity describes how a material's resistivity changes for each degree change in temperature. Questions use the relation between resistance, temperature and the coefficient, especially for metallic conductors with positive values and semiconductors with negative values. Resistivity is a material property, unlike resistance, which also depends on dimensions.
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