Answer: More electron-hole pairs are created.
- A Resistance decreases under most conditions encountered
- B More electron-hole pairs are created
- C Mobility increases mainly as frequently observed in practice
- D Charge density decreases in many documented cases
Correct answer: B. More electron-hole pairs are created
Explanation: Higher temperature provides energy to break covalent bonds, creating more electron-hole pairs, increasing conductivity.
Conductors have overlapping bands, semiconductors have a small energy gap that can be bridged by heat or doping, and insulators have a large gap that blocks conduction.
Concept context
Band theory, p-n junction, diodes, transistors, logic gates, and integrated circuits.