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# Circuits

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### Circuits

1. 1. Circuits Series vs. Parallel
2. 2. Vocabulary <ul><li>Circuit </li></ul><ul><li>Energy Source </li></ul><ul><li>Load </li></ul><ul><li>Conductor </li></ul><ul><li>Resistor </li></ul><ul><li>Switch </li></ul><ul><li>Series Circuit </li></ul><ul><li>Parallel Circuit </li></ul>
3. 3. Circuits <ul><li>A circuit is a path through which electricity can flow. </li></ul><ul><li>Charges flow in a circuit when there is a potential difference. </li></ul>
4. 4. Circuits <ul><li>Most circuits have three parts: an energy source , one or more loads , and conductors (wires) that connect the two. </li></ul><ul><li>Circuits may also have a switch that can be opened or closed to allow or stop the flow of current </li></ul><ul><li>Energy flows only through a closed circuit. </li></ul>
5. 5. Circuits
6. 6. Circuits <ul><li>Energy Source </li></ul><ul><ul><li>Used to push a charge through a circuit </li></ul></ul><ul><ul><li>Ex: batteries </li></ul></ul>
7. 7. <ul><li>Loads </li></ul><ul><ul><li>Devices in a circuit that operate using electrical energy </li></ul></ul><ul><ul><li>Examples: </li></ul></ul><ul><ul><ul><li>light bulb </li></ul></ul></ul><ul><ul><ul><li>toaster </li></ul></ul></ul><ul><ul><ul><li>motors </li></ul></ul></ul>
8. 8. Circuits <ul><li>Conductors </li></ul><ul><ul><li>Material that allows electrical energy to flow through it easily. </li></ul></ul><ul><ul><li>Ex: wires </li></ul></ul><ul><ul><ul><li>Wires carry electrical current from the energy source to the load that is apart of the circuit. </li></ul></ul></ul>
9. 9. Circuits <ul><li>Resistors </li></ul><ul><ul><li>Objects added to a circuit that restricts the flow of electrical energy </li></ul></ul><ul><li>Switches </li></ul><ul><ul><li>Devices that is used to control the flow of current through a circuit. </li></ul></ul>
10. 10. Series Circuits <ul><li>Series circuits provide only one possible path for the flow of current. </li></ul><ul><li>Loads are set up in series, or a line, that requires current to flow through one load before passing to through the next. </li></ul>
11. 11. Series Circuit
12. 12. Series Circuits <ul><li>Electricity in series has only one path to follow. </li></ul><ul><ul><li>A break in any part of the circuit will stop the flow of electricity through the entire circuit </li></ul></ul><ul><ul><ul><li>Ex: a burned-out bulb or open switch </li></ul></ul></ul><ul><li>All loads share the same energy source. </li></ul><ul><ul><li>Current lowers as more loads are added. </li></ul></ul><ul><ul><ul><li>Ex: Adding more bulbs causes bulbs to be dimmer. </li></ul></ul></ul>
13. 13. Parallel Circuits <ul><li>Parallel circuits offer more that one path for the flow of electricity. </li></ul><ul><li>Each load in a parallel circuit has its own closed circuit pathway to the energy source. </li></ul><ul><ul><li>A failure in one part of the circuit will not affect another part of the circuit. </li></ul></ul><ul><ul><ul><li>A bulb burns out in one path, but current can still flow through the circuit by another path. </li></ul></ul></ul>
14. 14. Parallel Circuits <ul><li>Each load connected to a parallel circuit uses the full voltage of the energy source. </li></ul><ul><ul><li>Adding more parallel loads to the circuit does not affect the current flowing through the other loads. </li></ul></ul><ul><ul><ul><li>Lights will not be dimmer as more lights are added. </li></ul></ul></ul>
15. 15. Parallel Circuit