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What are semiconductors? Give an example for n-type semiconductors.
Semiconductors are materials having electrical conductivity among that of insulators and conductors. This is because, in semiconductors, there is only a small difference in energy among the ?lled valence band of electrons and the empty conduction band. They are the solids which act as insulator at absolute zero but conduct electricity at ordinary temperatures. For instance, N-type semiconductor is obtained by doping Phosphorous or Arsenic on Silicon or Germanium
An object of mass 4 kg is moving on a smooth horizontal surface with a velocity of 10 m/s in rightward direction. A horizontal force F which shows in the above figure was applied o
Starting from Maxwell's electromagnetic equations in vacuum, get the wave equations for the four fields vectors E, D, B and H.
He chemical effects of electricity
to measure the extension of an experimental wire due to different pulling forces using searle''s apparatues.hence, determine the young modules of the material of the wire.
1. Discuss the internal noise sources that are present in a typical signal source and amplifier circuit, and describe their effects. 2. The company currently has a low noise a
The potential because of a continuous charge distribution is the sum of potentials of all the infinitesimal charge elements in which the distribution may be separated i.e.,
The beam below is supported at A and B. F1 and F2 in kN are given in P21 and P22 respectively. F3 in kN is given in P23 and the couple in kN.m is given in P24. Assume that F1, F
A woman walks 250m in the direction 35 degrees east of north, then 170m directly east. (a) using graphical method, find her final displacement from the starting point. (b) compare
Q. What takes place when you travel across the dateline? Answer:- If westbound the day modify to the next day. If eastbound the day is the day prior to. Appears strange bu
Define the characteristics of Heterojunction laser. Heterojunction laser: The threshold current density for homojunction lasers is extremely large because of poor optical an
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