Download Electric circuits

• 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.
energy source
switch
conducting wires
load
1. Source of electrical energy
1. Source of electrical energy
Examples
dry cells
batteries
solar cells
Symbols
1 cell
3 cells
(note: a battery is a combination of cells)
2. Electrical Load - converts electrical energy
into another form of energy
2. Electrical Load - converts electrical energy into
another form of energy
Examples
light bulb
motor
resistor
Symbols
light bulb
resistor
(note: a resistor can be used to represent any one
of many loads)
3. Conductors - pathway for electron flow
3. Conductors - pathway for electron flow
Examples
wires
Symbols
4. Switch - controls current flow
4. Switch - controls electron flow
Examples
switch
Symbols
Energy Source
(dry cell)
Load
(motor)
Conductors
Load (motor)
Load (LED)
Load
(light bulb)