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AC Applied to a Resistor

In a transist...

Question

In a transistor the base is made very thin and is lightly doped with an impurity, because

A

to enable the collector to collect about

95 %

of the holes or electrons coming from the emitter side

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B

to enable the emitter to emit small number of holes or electrons

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C

to save the transistors from high current effects

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D

to enable the base to collect about

95 %

of holes or electrons coming from the emitter side

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Solution

The correct option is A to enable the collector to collect about $95 %$ of the holes or electrons coming from the emitter side
In a transistor the base is made very thin and is lightly doped with an impurity, so as to enable the collector to collect about $95 %$ of the holes or electrons coming from the emitter side.

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