Question

Which one of the following have Positive Temperature Co-efficient of Resistance?

i. Copper; ii. Electrolyte; iii. Semiconductor; iv. Graphite.​

Answer 1

Explanation:

The Temperature Coefficient of Copper (near room temperature) is +0.393 percent per degree C. This means if the temperature increases 1°C, the resistance will increase 0.393%. Examples: You have 100 feet of 20 gauge wire and its resistance is 1.015 ohms at 20° C (room temp).