Question

A block of pure at 300 K has a length of 10 cm and an area of . If a battery of emf 2V is connected across it, what is the electron current? The mobility electrons is 0.14 m2 V–1s–1 and their number .

Solution

Correct option is

Given, 

  

    

The electric field in the block is  

           

               

The drift speed electrons is   

          

               

     

              

              .

SIMILAR QUESTIONS

Q1

Which of the following gates will have an output of 1?

                                              

Q2

The truth table given below is for

  

  A           B

  C

  0            0

  1

  1            0

  1

  0            1

  1

  1            1

  0

 

 

Q3

Which of the following gates corresponds to the truth table given below?

            

 A        B

 Y

 0         0

 1

 0         1

 0

 1         0

 0

 1         1

 1

 

 

Q4

The combinations A and B of the NAND gates are shown below. Combinations (A) and (B) are equivalent to

                                          

Q5

The truth table below is for

  

  A        B

 Y

  0         0

  1

  0         1

  0

  1         0

  0

  1         1

  1

 

 

Q6

In the binary number system, the number 11 stands for 

Q7

In the binary number system, the number 1101 implies

Q8

In Boolean algebra X = A + B implies that

Q9

In a NOT gate, if the input signal is 0, the output signal is

Q10

What is the number density of donor atoms which must be added to a pure germanium semiconductor to produce an n-type semiconductor of conductivity ? The mobility of electrons in n-type germanium is . Neglect the contribution of holes to conductivity.