Electronics: negative temperature coefficient
Self-tutoring about electronics: the tutor looks at the resistance of semiconductors relative to change in temperature.
Generally, semiconductors, such as silicon, lose resistance as temperature increases. This can be noticed as a negative temperature coefficient, since resistance reacts in the opposite direction to temperature.
The reason why a semiconductor’s resistance decreases with increasing temperature is the promotion of electrons from the bonding state to the conducting one.
Such is my understanding.
Source:
Jack of Oracle Tutoring by Jack and Diane, Campbell River, BC.
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