Question: 100% NCERT covered from Particular Keyword.Explanations are 100% from NCERT | [Difficult level: Easy] From NCERT NEET Derived Question.
In a transistor
(a) the emitter has the least concentration of impurity
(b) the collector has the least concentration of impurity
(c) the base has the least concentration of impurity
(d) all the three regions have equal concentrations of
impurity
Answer:
(c) In transistor base is least doped, so that most of electrons
emitted (in case of npn) from emitter reach to collector &
less number of electrons are destroyed due to
recombination with holes in base
Transistor
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