1. Electric Charge

2. What is Electric Charge?
Protons = ______ Charge
Electrons = _________ Charge
Neutrons =__________ Charge
When Protons = Electrons, atoms are said to be ELECTRICALLY NEUTRAL (no net charge)
Proton = +
Electrons = -
Neutrons = no charge

3. Conductors and Insulators
Conductors – objects in which electrical current easily passes through such as metals
Insulators – objects that resist the flow of electrical current such as plastic, wood, paper, and rubber

4. Conductors and Insulators
In a pencil, the lead is the conductor while the wood is an insulator.

5. The flow of ELECTRONS through a conductor.
WHAT IS ELECTRICITY?
The flow of ELECTRONS through a conductor.

6. What is the Force between Electric Charges?
Causes of Force
Distance between the charges
Amount of charge

7. Electric charge (q)
SI Unit of charge is Coulomb [C]

8. STATIC ELECTRICITY
The accumulation of excess electric charge. (not balanced)
Ex. Lightning

9. Electric vs Gravitational Force
Which is stronger electric force or gravitational force?
Electrical Force!
Because the electric force can overcome the gravitational pull of the Earth; and the Strong Electric Force is responsible for holding together the protons and neutrons in the nucleus of an atom. An atom’s nucleus can only be split by nuclear fusion, which cannot be done on Earth and gravity can’t do this!

10. Have these questions written in your notes with the correct answers only!

11. QUESTION 1: Which of the following objects is a good conductor?
A. Water
B. Rope
C. Copper
D. Plastic

12. QUESTION 2: Which type of force is strongest? A. Gravitational force
B. Electrical Force

13. QUESTION 3:
Which of the following balloon configurations depict the correct charges of the balloon and wall?

14. QUESTION 5: The imbalance of an electrical charge is also known as:
A. Charged electricity
B. Static Electricity
C. Contact Electricity
D. Negative Electricity

15. ELECTRICAL CIRCUITS

16. What is electric current?
Electric Current (I) - a flow of electrons from the (+) terminal to the (-) terminal of a cell/battery through wires and components - +

17. Electric Field
Electric Field – when the electrons of a current are in motion, lines of electric force rotate around the electron, or between two charges.

18. Open and Closed Circuits
Open circuit = switch is open = no current is flowing = bulb does not light
Closed circuit = switch is closed = current is flowing = bulb lights up

19. Circuit Diagram & Symbols
Cell/Battery
Resistor
Light Bulb
Light Bulb Resistor
Wires
Switch

20. Types of Circuits Draw these picture!
Series Circuits – current takes only one path and is the same at each point. (One Wire connects ALL)

21. Series Circuits - Draw these pictures
If one bulb blows out, it breaks the circuit and all the bulbs go out
If you add more cells/batteries to a series circuit, the bulbs burn brighter

22. Types of Circuits - Draw these pictures
Parallel Circuits – current takes more than one path and is NOT the same at each point. (Multiple Wires)

23. Parallel Circuits
If one bulb blows out, there is still another complete circuit for the other bulb to stay lit

24. Draw these circuits in your Notebook
Draw these circuits in your Notebook. Label each one as either Series or Parallel.
A – Parallel
B – Series