1. Electric Circuits (12.2)

2. CURRENT ELECTRICITY
CURRENT ELECTRICITY is the controlled movement or flow of electric charges along a conductor.
An ELECTRIC CIRCUIT is a controlled path for the flow of electric current. There are 4 main components to most circuits: energy source, load, conducting wires, switch.

3. Electric Circuits
energy source
switch
load
conducting wires

4. 4 Components of Electric Circuits
Source of electrical energy

5. 4 Components of Electric Circuits
1. Source of electrical energy
(note: a battery is a combination of cells)
Examples
Symbols
dry cells
batteries
solar cells
1 cell
3 cells

6. 4 Components of Electric Circuits
2. Electrical Load - converts electrical energy into another form of energy

7. 4 Components of Electric Circuits
2. Electrical Load - converts electrical energy into another form of energy
(note: a resistor can be used to represent any one of many loads)
Examples
Symbols
light bulb
motor
resistor

8. 4 Components of Electric Circuits
3. Conductors - pathway for electron flow

9. 4 Components of Electric Circuits
3. Conductors - pathway for electron flow
Examples
Symbols
wires

10. 4 Components of Electric Circuits
4. Switch - controls current flow

11. 4 Components of Electric Circuits
4. Switch - controls electron flow
Examples
Symbols
switch

12. Electric Circuits

13. Name the parts of an Electric Circuits
Energy Source
(dry cell)
Load
(motor)
Conductors
Load (motor)
Load
(light bulb)
Load (LED)