Related Questions

নিম্নের কোনটি p-টাইপ অর্ধপরিবাহীতে n-টাইপ অর্ধপরিবাহীর তুলনায় বেশি আছে? (Which of the following does a p-type semiconductor have more compared to an n-type semiconductor-)  
A মোট ধনাত্মক আধান (total positive charge)
B মোট আধান (total charge)
C ইলেকট্রন ঘনত্ব (density of electrons)
D হোল ঘনত্ব (density of holes)
In an intrinsic semiconductor, the number of free electrons
A Equals the number of holes
B Is less than the number of holes
C Is greater than the number of holes
D Impossible to say
E None of the above
The number of free electrons and holes in intrinsic semiconductor increases when the temperature
A Decreases
B Increases
C Stays the same
D 0oC
E None of the above
The impurity level in an extrinsic semiconductor is about of pure semiconductor.
A 10 atoms for 108 atoms
B 1 atom for 108 atoms
C 1 atom for 104 atoms
D 1 atom for 100 atoms
As the doping to a pure semiconductor increases, the bulk resistance of the semiconductor ___________
A Remains the same
B Increases
C Decreases
D None of the above
A semiconductor has generally ___________ valence electrons.
A 2
B 3
C 6
D 4
At room temperature the number of conducting electrons in an intrinsic semiconductor
A Is almost equal to the number of valence electrons
B Is about half the number of valence electrons
C Is small as compared to the number of valence electrons
D Is a very small fraction of the number of valence electrons
In a sample of 50 people, 19 had type O blood, 22 had type A blood, 7 had type B blood and 2 had type AB blood. If a person is selected randomly, find the probability that the person has neither type A nor type O blood?
A 15/25
B 31/50
C 11/25
D 9/50
Type 1 workers can do three times the work of Type 2 workers. Twelve Type 1 workers can complete a task in 10 days. How many days would it have taken 4 Type 1 and 8 Type 2 workers to complete the same task?
A 16
B 17
C 20
D 18
Materials with lots of free electrons are called
A Conductors
B Insulators
C Semiconductors
D Filters

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