A. 4
B. 5
C. 6
D. 3
Related Mcqs:
- A pentavalent impurity has______________Valence electrons?
A. 3
B. 5
C. 4
D. 6 - Addition of trivalent impurity to a semiconductor creates many_______________?
A. Holes
B. Free electrons
C. Valence electrons
D. Bound electrons - Addition of pentavalent impurity to a semiconductor creates many________________?
A. Free electrons
B. Holes
C. Valence electrons
D. Bound electrons - When a pentavalent impurity is added to a pure semiconductor, it becomes________________?
A. An insulator
B. An intrinsic semiconductor
C. p-type semiconductor
D. n-type semiconductor - 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 - A semiconductor has generally_______________valence electrons?
A. 2
B. 3
C. 6
D. 4 - The random motion of holes and free electrons due to thermal agitation is called______________?
A. Diffusion
B. Pressure
C. Ionisation
D. None of the above - 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 - 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 - 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
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