Question
Download Solution PDFWhich of the following has negative temperature coefficient of resistivity?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
- Temperature coefficient of resistance explains the variation in the resistance by the change in temperature. It is expressed in ohms/ohms°C
- If it is positive, resistance increases with an increase in temperature.
- If it is negative, resistance decreases with an increase in temperature.
Among the given options, the electrolyte has a negative temperature coefficient.
All metals and alloys of metals show a positive temperature coefficient.
Important Notes:
Semiconductors have a negative temperature coefficient as well.
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