Answer: Type of charge carrier (electron or hole) and carrier concentration.
- A The band gap energy of the semiconductor material according to most researchers
- B Type of charge carrier (electron or hole) and carrier concentration
- C The temperature coefficient of resistivity for the material in the majority of cases studied
- D The reverse breakdown voltage of a p-n junction diode as widely reported
Correct answer: B. Type of charge carrier (electron or hole) and carrier concentration
Explanation: Hall effect: transverse voltage in magnetic field. Sign of Hall voltage gives carrier type; magnitude gives carrier density.
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.