1. P3: Electricity ICT Investigation: Modeling Electrical Circuits

2. Objectives Review the concepts of current and resistance Understand potential difference in electrical circuits

3. Specific Objectives be able to draw and interpret circuit diagrams containing electrical sources, switches, resistors, ammeters, voltmeters and lamps…and use the correct symbols for these components be able to state that current is related to the flow of charge, and appreciate the need for a complete circuit Understand current and voltage in series and parallel circuits be able to explain how an ammeter and voltmeter are used in circuits, and what they measure be able to find out the relationship among resistance, current and voltage in Ohm’s Law

4. Circuit Construction Kit http://phet.colorado.edu/en/simulation/circuit-construction-kit-dc

5. Today’s Tasks Investigations: using the CCK, demonstrate that you understand the following concepts: 1.How to set up a simple circuit and draw a circuit diagram 2.Current and Voltage in a series circuit 3.Current and Voltage in a parallel circuit For each of these concepts, take a screenshot of your completed circuit, post it into a word document and then write a very brief description of what your screenshot shows. Submit a single word document with all your completed screenshots and explanations by Thursday.

6. Task 1 1.Set up a simple circuit with a battery and a light bulb…and make the light bulb light up! 2.Draw a circuit diagram for the circuit you set up 3.Set up an ammeter on your circuit and measure the current 4.Draw this circuit diagram as well

7. Task 2 1.Set up a circuit with two light bulbs in series and test the current and voltage everywhere in this circuit. 2.Make sure to record data that shows how current and voltage relate to series circuits, and make a general conclusion for both

8. Task 3 1.Set up a circuit with two light bulbs in parallel and test the current and voltage everywhere in this circuit. 2.Make sure to record data that shows how current and voltage relate to parallel circuits, and make a general conclusion for both

9. Example In the diagram above, there are three circuits, each with the same voltage, but progressively more lightbulbs. The more lightbulbs there are, the less bright each lightbulb in a circuit.