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p-n Junction Formation for GSEB: 4 solved questions

Real GSEB paper questions on p-n junction formation, part of semiconductor electronics. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2016 to 2022. No sign-in needed to read them.

What this topic asks

• Depletion region and barrier potential — 3 questions
• Diffusion and drift currents — 1 question

All 4 questions with solutions

• A potential barrier of 0.50 V exists across a p-n junction. If the depletion region is 5.0×10⁻⁷ m wide, the i… GSEB Board July 2016
• A potential barrier of 0.2 V exists across a p-n junction. If the depletion region is 5.0×10⁻⁷ m wide, the in… GSEB Board July 2018
• In an unbiased p-n junction, holes diffuse from the p-region to n-region because GSEB Board July 2021
• When p-n junction is kept in forward bias, . GSEB Board March 2022