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Impurities added in metals:
  • a)
    Increase the conductivity
  • b)
    Decrease the conductivity
  • c)
    May increase or decrease the conductivity
  • d)
    Does not affect the conductivity
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Impurities added in metals:a)Increase the conductivityb)Decrease the c...
  • Metals have a large number of charge carriers, which are free electrons
  • As the impurities/dopants are added there is no significant change in the concentration of carriers
  • The added impurities tend to scatter electrons in the metals
  • This decreases the mobility and hence the conductivity
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Impurities added in metals:a)Increase the conductivityb)Decrease the conductivityc)May increase or decrease the conductivityd)Does not affect the conductivityCorrect answer is option 'B'. Can you explain this answer?
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