The conductivity of a semiconductor is improved by adding:
ACoolants
BImpurities
CInsulators
DMagnets
Answer & Solution
Correct answer: B. Impurities
1. A pure semiconductor conducts too poorly to be useful.
2. Something must be added to raise its conductivity.
3. That is a small amount of impurity.
_Source: NCERT Class 12 Physics Part II, Chapter 14, Semiconductor Electronics._
Related questions
Indium, boron and aluminium are dopants that are:Arsenic, antimony and phosphorus are dopants that are:How many types of dopant are used with silicon or germanium?Silicon and germanium are described as elements that are:For a dopant not to distort the lattice, its atoms must be of nearly the same:A dopant must be chosen so that it does not distort the:Atoms of the added impurity go by which name:The deliberate addition of an impurity is called: