This video is about electromagnetism.
Source: various educators and Langhans
Simple, but good description of how a generator works.
Source: from eHow, Steve Jones
1. Explain how an electromagnet works.
2. If you decrease the battery voltage, what happens to the strength of the electromagnet?
3. What is a solenoid?
4. Where in the real world do you see electromagnets?
5. Explain how a generator uses electromagnetism.
6. Why do we use generators?
7. How do you make a stronger electromagnetic field?
Source: Langhans