36. p-type semiconductor as a whole—

1. 1. Positively charged

   
   
   

   2. Negatively charged

   
   
   

   3. Electrically neutral

   
   
   

   4. Half of it positively charged and rest half negatively charged

   
   
   

---

1. View Hint View Answer Discuss in Forum

   p-type semiconductor as a whole electrically neutral.

   Correct Option: C

   p-type semiconductor as a whole electrically neutral.

---

37. The germanium transistors are seldom used above—

1. 1. 60ºC

   
   
   

   2. 75ºC

   
   
   

   3. 175ºC

   
   
   

   4. 125ºC

   
   
   

---

1. View Hint View Answer Discuss in Forum

   The germanium transistors are seldom used above 75°C because in germanium leakage current is very large and it is increases tremendously for higher temperature.

   Correct Option: B

   The germanium transistors are seldom used above 75°C because in germanium leakage current is very large and it is increases tremendously for higher temperature.

---

---

38. Current density in a conducting media is—

1. 1. J = nqµ

   
   
   

   2. J = σE a

   
   
   

   3. J = nµ E

   
   
   

   4. J = nqε
      

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

---

39. In n-type semiconductor, there are—

1. 1. J = nqµ

   
   
   

   2. J = σE a

   
   
   

   3. J = nµ E

   
   
   

   4. J = nqε
      

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

---

---

40. In p-type semiconductor, there are—

1. 1. No majority carriers

   
   
   

   2. Electrons as majority carriers

   
   
   

   3. Immobile positive ions

   
   
   

   4. Immobile negative ions

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

---