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

    

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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 

Case Study

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