A. pentavalent
B. trivalent
C. divalent
D. tetravalent
Related Mcqs:
- Forward current through a semi conductor diode circuit is due to____________?
A. minority carriers
B. majority carriers
C. holes
D. electron - The specially designed semi-conductor diodes used as fast counters in electronic circuits are______________?
A. The light emitting diodes
B. Photo diodes
C. Photo voltaic cell
D. Solar cells. - To obtain a p-type semi-conductor Si Crystal must be doped with foreign atoms whose valency is_____________?
A. 2
B. 3
C. 4
D. 5 - The specially designed semi-conductor diodes used as fast counters in electronic circuits are_______________?
A. The light emitting diodes
B. Photo diodes
C. Photo voltaic cell
D. Solar cells. - A current carrying conductor is placed in a uniform magnetic field parallel to it. The magnetic force experienced by the conductor is _____________________?
A. F=1/B
B. F=1/Bsinθ
C. F/0
D. F=1/Bcosθ - To obtain an n-type semiconductor germanium crystal it must be doped with foreign atoms whose valency is_____________?
A. 2
B. 3
C. 4
D. 5 - A piece of copper and a piece of germanium are cooled from the room temperature down to 77 K.
A. The resistance of each of them increases.
B. The resistance of each of them decreases.
C. The resistance of copper decreases and that of germanium increases.
D. The resistance of copper increases and that of germanium decreasesSubmitted by: Tauseef Ali
- Semi-conductors with donor atoms and free electrons belong to the type________________?
A. n
B. p
C. mix
D. any of above - With increase in temperature the electrical conductivity of intrinsic semi conductor___________________?
A. Decreases
B. Increases
C. Remains same
D. First increases then decreases - Many of the semi conductors are crystals of the type__________________?
A. Face centred cubic
B. Body centred cubic
C. Simple cubic
D. All of the above
