Statement I : By doping silicon semiconductor with pentavalent material, the electrons density increases.
Statement II : The n-type semiconductor has net negative charge.
In the light of the above statements, choose the most appropriate answer from the options given below :
Solution
Pentavalent activities have excess free e<sup>$-$</sup>, so e<sup>$-$</sup> density increases but overall semiconductor is neutral.
About this question
Subject: Physics · Chapter: Electronic Devices · Topic: Semiconductors
This question is part of PrepWiser's free JEE Main question bank. 52 more solved questions on Electronic Devices are available — start with the harder ones if your accuracy is >70%.