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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
What is the path of the magnetic field at a point due east of a straight wire carrying a current due north?
what will happen if gravity becomes zero?is it possible in earth?
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what is the displacement of the body when potential and kinetic energies are eqal?
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