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GATE ECE 1995 | Question 3.4

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In an extriansic semiconductor if

(A) the resistivity decreases

(B) the temperature coefficient of resistivity is negative

(C) the photo conductivity is low

 

  1. the doping concentration is low
  2. the length of the semiconductor is reduced
  3. the band gap is high 
  4. the area of cross-section of the semiconductor is increased
  5. the doping concentration is increased

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