Electricity can only flow in a complete circuit. Changing different components of a simple circuit affects how much electric current can flow. Specifically:
- Adding more batteries increases electrical energy and makes a bulb brighter.
- Adding more bulbs or lengthening wires makes bulbs dimmer due to increased resistance limiting current flow.
- Thicker wires decrease resistance and allow more current to flow, making bulbs brighter.
2. Electricity can flow through the components in
a complete electric circuit.
Incomplete circuit
So the electric current cant flow
Complete circuit
So the electric current flow and
Lit the bulb
5. SwitchesSwitches
When a switch is open (off),
there is a gap in the circuit.
Electricity cannot travel around
the circuit.
When a switch is closed (on), it
makes the circuit complete.
Electricity can travel around the
circuit.
6. Changing number ofChanging number of
batteries/cellsbatteries/cells
Adding more batteries to a simple
circuit will increase the electrical energy,
which will make a bulb brighter.
7. Changing number of bulbsChanging number of bulbs
Adding more bulbs to a simple circuit
will make the bulbs dimmer.
8. Changing length of wiresChanging length of wires
Lengthening the wires in a simple circuit will
make the bulb dimmer.
Longer the wire the more the resistance so less
electric current can flow and the bulb dimmer
9. Changing thickness of wiresChanging thickness of wires
Thicker the wire in a simple circuit will
make the bulb brighter.
Thicker the wire less the resistance
so more electric current can flow
10. Electrical ConductorElectrical Conductor
All metal can conduct electricity but not all are
good electrical conductor
One of the best conductor is copper thats why
it commonly used for making wire
Copper
Plastic or rubber to
insulate the electric
current
12. If there is no electric insulator you will get electric shockIf there is no electric insulator you will get electric shock
when you touch itwhen you touch it