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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
a) What force is needed to give amass of 20kg an acceleration of 30m/s 2 ? b) Find the accelerating force when a car having a mass of 1.7Mg enhances its speed with a constant a
Inducing a Positive Charge on a Sphere The given below animation depicts the induction procedure. The neutral conducting sphere is at rest on top of an insulating stand. An unh
Question: A wire loop as well as a bar magnet lie in one and the same horizontal plane. The bar magnet is exterior of the loop. The bar magnet is rotating at a constant rate co
Critical angle in certain substance is 300. Calculate the polarization angle of the substance?
For the square voltage waveform displayed on an oscilloscope shown in Figure, find (a) its frequency, (b) its peak-to-peak voltage.
What do you mean by Normal shift? How can you calculate total internal reflection? Mention an application of total internal reflection.
Discuss about the term graded index fibre. Graded index fibre: A graded index fibre is diverse from the step index fibre not merely in the core refractive index variation bu
Instructors Own Problem: 1) On the surface of some strange planet, Mr. Spock finds his weight to be1200N. He then goes 5000km above the surface, and finds his weight to be on
mass=volume * density.By using this formula we can find the mass of sphere. Volume of sphere=(4/3)pi*r^3 V=(4/3)*3.14*(1*10^-2)^3=4.187*10^-6 Mass=(4.187*10^-6)*900=3768*10^-6kg
Forward Bias: When p-type material of a semiconductor diode is linked at positive potential and the n-type material is linked at negative potential of a voltage source, the dio
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