The random motion of holes and free electrons due to thermal agitation is called______________?

Related Mcqs:

1. A semiconductor has generally_______________valence electrons?

   A. 2
   B. 3
   C. 6
   D. 4

2. A pentavalent impurity has______________Valence electrons?

   A. 3
   B. 5
   C. 4
   D. 6

3. A trivalent impurity has______________valence electrons?

   A. 4
   B. 5
   C. 6
   D. 3

4. If 1 A current flows in a circuit, the number of electrons flowing through this circuit is

   A. 0.625 × 10¹⁹
   B. 1.6 × 10¹⁹
   C. 1.6 × 10-¹⁹
   D. 0.625 × 10-¹⁹

5. If an electrons is allowed to move along the field in a non uniform electric field then it will follow__________________?

   A. Spiral path
   B. Straight line
   C. Curved path
   D. Circular path

6. The number of electrons in one coulomb charge is equal to_______________?

   A. 6.2 x 1018
   B. 1.6 x 1019
   C. 6.2 x 1021
   D. 1.6 x 10-27

7. The resistance encountered by a train in motion is on account of_________________?

   A. resistance offered by air
   B. friction at the track
   C. friction at various parts of the rolling stock
   D. all of the above

8. Thermal runaway occurs when_________________?

   A. Collector is reverse biased
   B. Transistor is not biased
   C. Emitter is forward biased
   D. Junction capacitance is high

9. In an intrinsic semiconductor, the number of free electrons_____________?

   A. Equals the number of holes
   B. Is greater than the number of holes
   C. Is less than the number of holes
   D. None of the above

10. SI unit of the permittivity of free space is________________?

    A. Nm2C2
    B. N-1mC-2
    C. NmC-1
    D. N-1m-2C2