Download - Circuit (symbols,dimmer and brighter)
Electricity
charges move in a wire the way water flows in a river.
Current electricity
Or
Electric current
The flow of electrical charges is known as:
What gives us current electricity?
Think ! Will this bulb light ?
What is missing?
A battery ( power source )
Think ! Will this bulb light ?
What is missing?A wire ( connector )
Think ! Will this bulb light ?
What is missing?
A bulb ( load )
circuit
The path which electric current flows
Power source
cell
battery
Load
buzzer
motor
Bulb or lamp
Connector
wire
Power source Load Connector
wire cell
battery
buzzer
motor
bulb
From where does the current flow? From the (-) or (+) ?
Incomplete circuit
open circuit
broken circuit
complete circuit
closed circuit
unbroken circuit
What is the switch used for?
Closed circuit or open circuit?
Closed or open circuit?
Closed or open circuit?
If I added more batteries to a circuit, what will happen to
the bulb?
The electric energy increase, so the bulb glows brighter
If I added more bulbs to a circuit?
The electric energy decrease, so the bulb glows dimmer
If I added longer wires to a circuit?
The electric energy decrease as it travels more, so the bulb glows dimmer
Symbols • We use the circuit symbol to make it
easier for us to draw a circuit.
Bulb ( off )
Wire
Switch ( off )
Switch ( on )
Buzzer
Motor
Cell
Solve extra worksheet
Draw a circuit
Draw a circuit
Draw a circuit
Draw a circuit
Draw a circuit
Draw a circuit
1 cell, 2 lamps
2 cells, 2 lamps, switch ON
1 battery, 1 bulb, switch OFF
1 cell, 1 motor
1 buzzer, 1 motor, 2 cell
1 cell, 3 buzzer
1 cell, 1 buzzer, 1 motor