← 3.3 Introduction to electronics
Semiconductors, doping and where they are used
Physics · Grade 10 · about 40 minutes
How adding a trace of an impurity turns silicon into the most useful material in modern technology.
Sign in to read this lesson
Lessons are for learners and teachers with an account. Browsing the curriculum — subjects, strands and what each sub-strand covers — stays open to everyone.
- 13 sections of explanation, worked examples and diagrams
- 2 practice tasks with hints and worked answers
- A quiz that marks itself as you go
- Your progress kept across every subject you take
Other lessons in this sub-strand
- Why some materials conduct and others do not
- Semiconductors, doping and where they are used
- Resistance and temperature
- Superconductors and cooling
- Electronics around us
- Why silicon runs the world