232. Number of minorily carriers crossing the junction depends primarily on the
A. magnitude of the potential barrier
B. concentration of doping impurities
C. magnitude of the forward bias voltage
D. rate of thermal generation of hole-electron pairs.

---

233. The reverse saturation current is the current that flows when
A. the potential barrier is zero
B. the junction is unbiased
C. only majority carriers are crossing the junction
D. only minority carriers are crossing the junction

---

234. A forward bias
A. reduces the minority-carrier current to zero
B. lowers the potential barrier
C. raises the potential barrier
D. reduces the majority-carrier current to zero

---

235. The space-charge region contains charges that are
A. mostly majority carriers
B. mostly minority carriers
C. fixed donor and acceptor ions
D. mobile donor and acceptor ions

---

236. The minority-carrier current in the unbiased p-n junction at equilibrium is
A. equal to and in the same direction as the majority-carrier current
B. equal to and in the opposite direction of the majority-carrier current
C. much greater than the majority-carrier current
D. zero

---

237. Avalanche breakdown occurs when
A. forward current becomes excessive
B. forward bias exceeds a certain value
C. reverse bias exceeds a certain value
D. the potential barrier is reduced to zero

---

238. When a p-n junction is biased in the forward direction
A. no current flows
B. only holes on the p-type side are injected into the n-type side
C. only electrons on the n-type side are injected into the p-type side
D. majority carriers on each side are injected into the other side

---