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Unit 5:Electricity, open and close circuitsç, Short-Circuit, Difference…
Unit 5:Electricity
Open, close and shorts circuits
Open: When the energy of the power source cannot reach the load devices, so the courrent cannot flow
Closed: When the energy of the power source cannot reach the load devices, so the electric current cannot flow
Short circuits: Occurs when the electric current is transported by wires without passing through a load devices.
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TYPES OF CIRCUITS
Serie circuits: In this circuitsm, all the components are cnnected one after the other
Series-parellel combination circuits: These circuits contain devices connected in series and in parallel.
Pararllel circuits: In these circuits, the load devices are connected on differents branches of the wire.
Conductor and insulators
Conductors let electric current flow through them 
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Components of a circuit
Power sources
CELL
Battery
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ENERGY AND ENVIROMENT
enviroment impact of energy production and transmission: Electrical energy is generated in industrially in power stations, which convert a form of energy to electrical energy
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