Manga Questions 156-195

1. What is an example of a semiconductor device?
Diodes and transistors

2. Why is silicon used in the manufacture of semiconductors?
Because it has no valence electrons so electricity will hardly pass through it

3. Discuss the difference using an example of the difference between and N-type and P-type semiconductor.
an N type semiconductor like phosphorous bonds with silicon and releases a free electron which causes electrical conductivity to increase due to the negatively charged electron. A P type like Boron has a missing valence electron causing a hole, holes are vacant places for electrons in covalent bonds or a free elctron with a positive charge. Aslo increasing electrical conductivity.

4. In your own words describe what a diode does and the role of N and P type semiconductors.
resisits the transference of electricity since the potential barrier increase when connected to electricity a reverse bias or the electrons are drawn to one side or the other allowing electricity to flow like a valve.

5. What is rectification?
The property that causes current to flow in only one direction.

6. What causes color in an LED? Give and example of what causes a particular color.
The wavelength of the raw materials of the semiconductor varies the color of the light.

7. What is the relationship between base current and collector current in a transistor?
The basse current allows the collector current to get bigger or smaller it controls the collector currents flow.

8. What are the advantages of a transistor over a switch?

Since it can be turned on and off rapidly, control can be fine-tuned and it doesn’t wear out.