Semiconducting Devices Question 136
Question: Which statement is correct
[MP PMT 1994]
Options:
A) N-type germanium is negatively charged and P-type germanium is positively charged
B) Both N-type and P-type germanium are neutral
C) N-type germanium is positively charged and P-type germanium is negatively charged
D) Both N-type and P-type germanium are negatively charged
Show Answer
Answer:
Correct Answer: B
Solution:
Option (B) is correct At the point when a pentavalent pollution particle is added to an unadulterated semiconductor to make it n-type semiconductor, it gives one free electron to the precious stone, leaving a positive charge on the contributor molecule, the gave electron stays in the gem in free state. As the charge on the giver particle is equivalent and inverse to the charge of the electron, the gem itself remains electrically nonpartisan. With a similar thinking, p-type semiconductor is additionally electrically unbiased. Henceforth, Both N−type and P−type germanium are neutral.
