Electricity and Electric Circuits

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Presentation transcript:

Electricity and Electric Circuits Read pgs. 432 – 433. Complete Quick Lab – Light the Lights

Current Electricity static electricity not useful for operating electrical devices because the charges do not flow continuously current electricity this continuous flow of electric charges from one place to another an electric current is useful for electrical devices as long as there is an energy source and a complete path for the electrons to flow through

Electric Circuit Source of Electrical Energy Examples: batteries, wall outlets, generators

Parts of an Electric Circuit Electrical Load The name given to anything that converts electrical energy into whatever form of energy we need eg. lamp, toaster

Parts of an Electric Circuit 3. Conductor conducting wire that provides a controlled path for electric current to flow to each part of the circuit

Parts of an Electric Circuit 4. Electric Circuit Control Device examples: switches on stereos, lamps, TV, etc.

Closed vs. Open Circuit a closed circuit is when a circuit is operating and current is flowing ie. TV is on, light is on, etc. an open circuit is when a circuit is NOT operating and current is NOT flowing ie. TV off, light off, etc.

Direction of Current Flow current flows out of the negative part of the cell through the wires (connectors), and back into the positive part of the cell What causes it to happen this way? negative charges build up energy and push through the wire