In a transistor (npn), the emitter is:
ASame as collector
BHeavily doped (to inject majority carriers efficiently)
CInsulating
DLess doped than base
Answer & Solution
Correct answer: B. Heavily doped (to inject majority carriers efficiently)
Emitter: heavily doped → efficient injection of electrons (npn) into base. Base: thin, lightly doped → minimal recombination. Collector: moderately doped, larger → collects carriers and dissipates heat.
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