Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
The c Crookes tube and the television picture tube are examples of ____. |
Cathode-ray tubes. |
|
The most common type of transistor is the _____ transistor. |
Field-effect |
|
The material containing an excess of holes in the crystal lattice is a ____ semi conductor. |
p-type |
|
Adding arsenic atoms to a crystal of silicone in order to increase its conductivity is an example of the process called ____. |
Doping |
|
A vacuum tube containing two electrodes and designed to allow current to pass in only one direction is a _____. |
Diode |
|
The flow of electric current through a vacuum from a heated filament to a positive electrode is the ____emission. |
Thermionic |
|
A semiconductor device that can amplify weak signals and act as a switch is a ____. |
Transistor |
|
The branch of the study of electricity that deals with the behavior of electrons in a vacuum or in special materials is called _____. |
Electronics |
|
Substances that are neither good conductors nor good insulators are called ____. |
Semiconductors |
|
Sir J.J. Thomson discovered that "cathode rays" are actually streams of ____. |
Electrons |