Assertion: silicon carbide's resistance | /r/CapableOf | drop as the carbon heats
Facets:
value: due to a negative temperature coefficient
type: CAUSE
Source sentences:
text: To finish the items, the process is run for approximately 20 hours at 200 V with a starting current of 300 A (60 kW) for a furnace approximately 9 meters long by 35 cm in width and 45 cm in depth, and the resistance drops as the carbon heats due to a negative temperature coefficient, causing the current to increase.