The concentration of minority carriers in an extrinsic semiconductor under equilibrium is
- A. Directly proportional to the doping concentration
- B. Inversely proportional to the doping concentration
- C. Directly proportional to the intrinsic concentration
- D. Inversely proportional to the intrinsic concentration
Answer: B. Inversely proportional to the doping concentration
Explanation: By the law of mass action (np = ni²), the minority carrier concentration in an extrinsic semiconductor at equilibrium is inversely proportional to the majority doping concentration (e.g. p = ni²/Nd).