Practice question · Select all that apply
Select every statement that is TRUE of semiconductors and transistors.
Hints
- Four options restate the lesson; one contradicts what a diode is for.
- Recall what makes a rectifier useful.
Show the answer
- A. p-type doping supplies holes that act as positive carriers
- C. A transistor is a voltage-controlled switch
- D. n-type doping supplies extra mobile electrons
- E. Silicon is a semiconductor whose conductivity can be tuned by doping
Why
Doping, the two carrier types and the controlled switch are all exactly as taught. A p-n junction conducts in one direction only, and that asymmetry is the entire reason diodes exist as rectifiers and LEDs.
Practise Semiconductors and Transistors
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