FOR SEMI CONDUCTOR TO HAVE NEGATIVE TEMPERATURE COEFFICIENT OF RESISTANCE IMPLIES THAT

• A. their resistance decrease with temperature ✓
• B. The resistance increase with temperature
• C. their resistance is constantly changing with temperature
• D. they have electrons and holes at high temperature

In semiconductors, the temperature coefficient of resistance (TCR) indicates how the resistance of the material changes with temperature. A negative temperature coefficient of resistance means that as the temperature increases, the resistance of the semiconductor decreases. This phenomenon is commonly observed in certain types of semiconductors due to their unique electrical properties.

When a semiconductor exhibits a negative temperature coefficient of resistance, it means that its resistance decreases as the temperature rises. This behavior is contrary to what is typically seen in conductors, where resistance tends to increase with temperature.

In semiconductors with a negative TCR, as the temperature increases, more charge carriers (electrons or holes) are released from their bound states and become available for conduction. This increased availability of charge carriers leads to a decrease in resistance because there are more carriers to facilitate current flow through the material.