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Which of the following does not accurately describe transistors?
A. Both NPN and PNP transistors consist of an emitter, base, and collector.
B. Both NPN and PNP transistors consist of a base composed of an N-type material.
C. Both NPN and PNP transistors consist of P-type and N-type material.
D. Both NPN and PNP transistors operate in the same manner but with interchanged terminals and opposite directions of
voltage and current.

Respuesta :

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The answer is B. Both NPN and PNP transistors consist of a base composed of an N-type material.
Base can be N or P type, does not have to be the same.
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The correct answer of this question is :B) Both NPN and PNP transistors consist of a base composed of an N-type material.

EXPLANATION:

A transistor is a semiconductor device in which an n-type semiconductor is sandwiched between two p-type semiconductors or a p-type semiconductor is sandwiched between two n-type semiconductors.

Hence, it is of two types i.e NPN and PNP.

All the two type of transistors contain three parts i.e emitter,base and collector. In PNP transistor, the emitter, base and collector are p-type, n-type and p-type semiconductors respectively.

In NPN transistors, the emitter, base and collector are n-type, p-type and n-type semiconductors respectively.

Both the transistors are normally operated in same way. The emitter-base junction is forward biased and collector-base is reversed biased. Depending on the type of transistors, the polarity is changed for forward and reverse biasing.

Hence, the wrong statement is that  both NPN and PNP transistors consist of a base composed of an N-type material.