1. April 13, 2005Created by Kristy Lynn Price Current Electricity TLW contrast a series circuit and a parallel circuit.

2. April 13, 2005Created by Kristy Lynn Price Electricity needs a complete path along which to follow.

3. April 13, 2005Created by Kristy Lynn Price How Does Electricity Flow? Electricity must follow a complete path Circuits can be closed, or complete, or they can be open, or incomplete The path that electricity can move through is called a circuit The electricity that flows through a circuit is called current electricity

4. April 13, 2005Created by Kristy Lynn Price Series Circuit Two objects are connected in a single path Electricity can flow in only one way Refer to pages F82 and F83 Closed Circuit: when both bulbs are in place –Needed in order for electricity to flow Open Circuit: created when one bulb is removed –Current cannot complete its path The bulbs are dim when lit

5. April 13, 2005Created by Kristy Lynn Price Series Circuit +- D-cell Closed Circuit +- D-cell Open Circuit Electricity can flowElectricity cannot flow

6. April 13, 2005Created by Kristy Lynn Price Parallel Circuit It connects each object to the cell separately Provides two paths by which current can flow When one bulb is removed from a parallel circuit, the other bulb is still a part of a complete circuit –That is why it remains lit The bulbs are brighter than in a series circuit What advantage can a parallel circuit have?

7. April 13, 2005Created by Kristy Lynn Price Parallel Circuit +- D-cell +-

8. April 13, 2005Created by Kristy Lynn Price Comparison SeriesParallel ConnectionBoth bulbs are on the same circuit Each bulb is on a separate circuit Removing one bulb Both bulbs go offOnly the removed bulb goes off BrightnessDimBright

9. April 13, 2005Created by Kristy Lynn Price Review Complete workbook page 318 What is a circuit? What are two ways that a circuit can be arranged? How is a parallel circuit different from a series circuit? How are the circuits similar?