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P3: Electricity

P3: Electricity. ICT Investigation: Modeling Electrical Circuits. Objectives. Review the concepts of current and resistance Understand potential difference in electrical circuits. Specific Objectives.

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P3: Electricity

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  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 Kithttp://phet.colorado.edu/en/simulation/circuit-construction-kit-dc

  5. Today’s Tasks Investigations: using the CCK, demonstrate that you understand the following concepts: • How to set up a simple circuit and draw a circuit diagram • Current and Voltage in a series circuit • 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 • Set up a simple circuit with a battery and a light bulb…and make the light bulb light up! • Draw a circuit diagram for the circuit you set up • Set up an ammeter on your circuit and measure the current • Draw this circuit diagram as well

  7. Task 2 • Set up a circuit with two light bulbs in series and test the current and voltage everywhere in this circuit. • 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 • Set up a circuit with two light bulbs in parallel and test the current and voltage everywhere in this circuit. • 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.

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