The resistance of positive temperature coefficient materials increases or decreases with increase in temperature

The resistance of positive temperature coefficient materials:

1. Decrease with an increase in temperature
2. Increases with an increase in temperature
3. Remains constant despite of temperature change
4. None of these

Correct answer: 2. Increases with an increase in temperature

The resistance of positive temperature coefficient materials increases with an increase in temperature.

Copper is an example of PTC (positive temperature coefficient) materials, its reistance increases with increase in temperature.