Electric charges: a reality
Experiments showing the existence of electric charges
- rubbing a balloon with a piece of wool
- glass rod rubbed with silk
- rubber rod rubbed with fur
- Two different kind of charges: positive and negative (one kind on the wool and the other type of the balloon)
- Like charges repel; unlike charges attract
- Materials that are able to transfer charges are known as conductors
- Materials that cannot transfer charges are known as insulators
- Grounding --> giving the charges to the Earth