⚡Electricity⚡
Is a form of energy that lets negative charge particles move from one atom to another.
ElectricityConductors
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Materials that let electric current flow through them.
Insulators
Materials that do not let electric current flow throgh them.
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Electric circuits
Interconnected components that an electric current flows throught to produce an effect
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Symbols
Wire 
Lamp 
One-way switch 
We represent electrical circuits whit a very simple drawing called an electrical schematic. All components have a standardised symbol
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Closed 
Open 
Short circuits: Occurs when the electric current is transported by the wires whithout passing through a load device
Ohm´s law
Types of circuits
Fornula: 
Resistance: The opposition to the flow of elctric current.
Voltage: The difference in the charge between two points, which makes the electrons moves
Current: The intensity of the current or the amount of elctrons flowing through a conductor over a certain time.
Series circuits: All the components are connected one after the other. 
Parallel circuits: The load devices are connected on different branches of the wire. 
Series-parallel combination circuits: Contain devices connected in series and in parallel. 
Solving circuits
Parallel 
Series 