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GyanMul Prep · NEB +2 · Science · Grade 12

Physics (Science, Grade 12)

Everything on these tabs is Physics (Science, Grade 12) only, within NEB +2 Science · Grade 12.

Science · Grade 12 subjects

GyanMul Prep · NEB +2 · Science · Grade 12

Physics (Science, Grade 12)

Everything on these tabs is Physics (Science, Grade 12) only, within NEB +2 Science · Grade 12.

Science · Grade 12 subjects

Chapter 22 of 25 · Physics (Science, Grade 12)

Semiconductor Devices

7 topics
Board exam — Modern Physics, 19 marks across 6 chapters
23 solved questions

From doped silicon to a working circuit: the p–n junction and what bias does to it, rectification, the transistor as an amplifier, and the logic gates built on top.

Practise this chapter Read solved questions

Topics

What the syllabus defines for this chapter

1Intrinsic and extrinsic semiconductors; p-type and n-type
2p–n junction diode; forward and reverse bias
3Half-wave rectification
4Full-wave rectification using two diodes and a bridge
5Zener diode and voltage regulation
6Transistor: characteristics and action as an amplifier
7Logic gates — AND, OR, NOT, NAND, NOR — with symbols and truth tables