Home Physics Semiconductor Electronics All Topic Question for Revision Test In -type semiconductor, electrons are major…
Physics Semiconductor Electronics All Topic Question for Revision Test MCQ (Single Correct)

In -type semiconductor, electrons are majority charge carriers but it does not show any negative charge. The reason is

A
electrons are stationary
B
electrons neutralize with holes
C
mobility of electrons is extremely small
D
atom is electrically neutral

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The correct answer is:
D

The n-type semiconductor region has (negative) electrons as majority charge carriers and an equal number of fixed positively charged donor ions. Again, the material as a whole is neutral. That is a reason, that atom is electrically neutral.

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