1. What is an example of a semiconductor device?
Diodes and transistors are semiconductor devices.
2. Why is silicon used in the manufacture of semiconductors?
The purity of silicon is 99.999999999%.
3. Discuss the difference using an example of the difference between and N-type and P-type semiconductor.
N-type is a negative semiconductor which has a negative electrical property. P-type is a positive semiconductor with a missing covalent electron.
4. In your own words describe what a diode does and the role of N and P type semiconductors.
A diode is made up of p-type and n-type semiconductors. When attached together it allows the electrical current to flow in one direction. There is a barrier in the middle of it that prevents the electrons from attracting each other and current is still allowed to flow. If there is too much voltage the barrier could be broken and the diode could break.
5. What is rectification?
It allows current to flow in one direction.
6. What causes color in an LED? Give and example of what causes a particular color.
Light is produced when the negative and positive electrons collide in the middle of the diode and produce energy that emits light. The colors are a result of the raw material used for the semiconductors.
7. What is the relationship between base current and collector current in a transistor?
Current flows from the base to the emitter called base current.When the base current flows it causes current from the collector to also flow to the emitter and it’s called collector current. The collector current becomes greater than the base current.
8. What are the advantages of a transistor over a switch?
A transistor has no physical contact and so it will not wear or fail as easily and it can be turned on and off much faster allowing to precise control.
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