1. Electricity and Magnetism

2. Nikola Tesla

4. Positive and negative charge
Protons: have a positive charge and are in the nucleus of an atom
Electrons: have a negative charge and orbit an atom
Neutrons: have a neutral charge and are in the nucleus of an atom
Atoms: have equal amounts of protons and electrons so atoms have a neutral charge

6. Electrical Charge
Law of conservation of charge: charge cannot be created or destroyed, it can only be transferred from one object to another

7. Electrical Charge
Charges exert forces: Charges that are alike repel each other
Opposite charges attract each other
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8. Electrical Charge
Electrical charge and force: as the electrical charge increase, the electrical force increases
Electric fields: every thing with an electrical charge is surrounded by an electrical field

9. Gravity vs. Electricity
The electrical force between 2 objects is much stronger than gravity
BUT because electrical charge is constantly being transferred between objects, the electrical force feels weaker than gravity

11. Conductors and Insulators
Conductors and insulators: electrons are held tightly in some atoms and not as tightly in other atoms

12. Conductors
Conductors: a material in which electrons are able to move easily
Examples: copper, metal, water

13. Insulators
Insulators: a material in which electrons are not able to move easily in
Examples: plastic, wood, rubber, and glass

14. Charging Objects
Charging by contact: the transferring of electrons by touching or rubbing

15. Charging Objects
Charging by induction: the rearranging of electrons on a neutral object caused by a nearby charged object

16. Transferring Electrical Charge
Static Electricity: the accumulation of excess electrical charge on an object
Static Discharge: the transfer of charge between two objects because of a build up of static electricity
Example: lightning

18. Lightning
Lightning: a large static

19. Thunder
Thunder: caused by the intense heat warming the air from the lightning and making rise very quickly causing a noise
lightning-strikes-slowed-down.html

20. Detecting electrical charge
Electroscope: an instrument to detect electrical charge

21. Electrical Current
Electrical current: the movement of electric charges in a single direction
Measured in amperes
One ampere = 6250 million electrons moving past a single point every second

22. Voltage difference
Voltage difference: electrical charge flows from a higher voltage to a lower voltage which keeps the electrical flow going
Measured in volts