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Electrical Energy 101

Understanding Circuits. Electrical Energy 101. Circuit in a box!. Tasks: Light a bulb Light two bulbs in two different ways Light as many bulbs as you can. Understanding Circuits. Electrical Energy 101. Circuits.

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Electrical Energy 101

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  1. Understanding Circuits Electrical Energy 101 Circuit in a box! Tasks: Light a bulb Light two bulbs in two different ways Light as many bulbs as you can

  2. Understanding Circuits Electrical Energy 101 Circuits A circuit is a closed path or loop around which an electric current flows. Voltage: a kind of electrical force that moves electricity through a conductor. The bigger the voltage, the more current will flow. Current: a steady flow of electrons (measured in amperes, or amps) Resistor: a component that limits or regulates the flow of electrical current in a circuit

  3. Understanding Circuits Electrical Energy 101 Circuits A circuit is a closed path or loop around which an electric current flows. Battery Conductor Circuit Diagram Resistor

  4. Understanding Circuits Wiring the Control Box Circuit in Series Circuit Diagram

  5. Understanding Circuits Wiring the Control Box Circuit in Parallel Circuit Diagram

  6. Understanding Circuits Wiring the Control Box Comparing Circuits Series Parallel

  7. Understanding Circuits Wiring the Control Box Visualizing Circuits(virtual program)

  8. Understanding Circuits Wiring the Control Box • Challenges to teaching students about electricity and circuits: • Study* found that 50% of 12-year-olds and 60% of 14-year-olds picture a light bulb “using up” the current as it comes from the battery • Students confuse “current” “electricity” and “energy” • Students sometimes think of voltage and current as the same thing and expect voltage to increase when current increases • Using ammeters and voltmeters in simple circuit experiments can help to clarify • Experts suggest: • Presenting the concept of voltage first, then current • Working with series and parallel circuits separately • Carefully selecting multiple analogies (such as a bicycle chain or workers pushing a train around a track) to describe flow through a circuit *Shipstone cited in Making Sense of Secondary Science

  9. Draw a circuit using the symbols below. Example Battery Conductor Resistor Switch

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