Malo, and today I will be talking to you about something I have been learning about in science for a few weeks now.
Where does the word circuit come from ?
The word circuit comes from,” circle ” and “going around “or a path that goes around and around. This basically means something that goes around in a circle. The word circuit was used as electricity works when it travels in a loop beginning from the power source, then circling through the wires and back to the source.
Describe how electrical current is made:
Electric current is made when a power source, for example a battery or a generator pushes tiny particles which are called electrons to move around wires and the circuit. The battery or generator also gives energy to the electrons to help push the particles/electrons.
Can electrons flow if the circuit is open?
No, the electrons cannot flow as the circuit is opened so this means there is a break in the loop, so the electrons have nowhere to travel to. Whereas if the circuit was closed the electrons would be able to travel all around and create a loop.
What does a switch do?
The switch controls the circuit by opening and closing it. Opening the switch means the electrons will have nowhere to go, but if the switch was closed the electrons would be able to travel all around creating electric current.