1. What can a piece of glass do after it has been rubbed against rabbit hair?

2. What did Benjamin Franklin find as the cause of electric forces?

3. Who actually elaborated the mathematical relation between charge and force?

4. Where does one find electricity?

5. What happens to the charges on a charged insulator?

6. What is an ion?

7. What electrical property is common to all metals?

8. Why are metals good conductors?

9. What creates electric charges in thunderstorms?

10. Around 1880, in the study of electricity, what came to replace the enormous generators of charge?