A. HISTORY and Electricity:
How much of what transpired did so in the best interests of humanity, and how much was determined by egoism & economic considerations?
B. Getting power to our homes
1. What is the difference between AC and DC?
2. How is electricity generated?
3. How does electricity get to our homes?
4. What happens when lots of current flows through a conductor?
5. How is this problem addressed in power distribution?
6. What voltage leaves the power station?
7. What voltage comes out of the mains?
8. What voltage do our domestic appliances require?
9. How does all this happen?????
Extension (if time) - Complete an experiment on transformers.
10. Why is it that birds can sit on electrical wires, yet if we touch one with a metal ladder, we get scorched? Could we hang onto one? Why do we sometimes see bats fried on the wires?