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All 9 questions. After you submit, each question shows the right answer and why. Back to the quick check
A diode lets electric current flow in only one direction, like a one-way door.
Which tiny device can work as an on-off switch and is the key building block of computer chips?
Who shared the 1956 Nobel Prize in Physics for discovering the transistor effect?
Arsenic atoms have five valence electrons and silicon atoms have four. What kind of semiconductor do you get by adding a little arsenic to silicon?
Why does diamond hardly conduct electricity, while silicon conducts a little at room temperature?
In a p-type semiconductor, the majority charge carriers behave like positive charges called holes.
If the number of components on a chip doubles every two years, by what factor does it grow over 10 years?
Silicon's band gap is about 1.14 eV, while an arsenic donor electron is bound by only about 0.02 eV. Roughly how many times larger is the band gap than the donor binding energy?
Using band theory, explain why a pure semiconductor's conductivity rises with temperature, and why a material with a band gap several times larger behaves as an insulator at room temperature.
