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Day 2: Parts of a Circuit

Day 2: Parts of a Circuit. Simple Circuits. An electric circuit is the path that an electric current follows. Current is flowing charges, like cars on a highway – THIS IS DIFFERENT FROM STATIC ELECTRICITY!!!. Circuit Diagrams. Battery Switch Light bulb Wire.

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Day 2: Parts of a Circuit

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  1. Day 2: Parts of a Circuit

  2. Simple Circuits • An electric circuit is the path that an electric current follows • Current is flowing charges, like cars on a highway – THIS IS DIFFERENT FROM STATIC ELECTRICITY!!!

  3. Circuit Diagrams Battery Switch Light bulb Wire

  4. All electric circuits have three parts: • Source of electric energy (battery or wall outlet) • Wires • Device that uses the energy (light bulb, stereo, etc.)

  5. Electric current in a circuit + Circuits flow in a circular path from positive to negative

  6. Open or Closed? http://phet.colorado.edu/new/simulations/sims.php?sim=Circuit_Construction_Kit_DC_Only • In order for electricity to move through a circuit it must be closed • If a circuit is open then the electricity cannot flow • Switches are objects that are used to determine whether a circuit will be closed or opened open

  7. There are two types of circuits… • Series • Parallel

  8. Types of Circuits What is the difference between the wiring?

  9. Series Circuits • This is the simplesttypeofcircuit

  10. The electric charges can follow only one path through the wires of the circuit • If one part goes out, they all go out.Ex. – Old-style Christmas lights are wired this way Series Circuits

  11. + Series Circuits Burned out light bulb If this light bulb does not turn on, neither light bulb will turn on. The circuit is broken and the current can’t flow to this bulb here.

  12. Parallel Circuits • The electric current can follow more than one path (branch)

  13. + Parallel Circuits The current divides because it has more than one path to flow. Even though the path is stopped, the other light turns on because its circuit is not broken. Burned out light bulb

  14. Parallel Continued • So would series or parallelbe better to wire a house? • Parallel because if one light is missing or not working, the other lights have alternate paths to follow and will STAY LIT!

  15. Building Circuits • Materials: • Wire • Cell • Bulbs • switch • Build a series circuit with a switch to control the light bulb • Build a parallel circuit with 2 light bulbs and a switch that controls one light bulb only

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