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Electricity

Electricity. Electrical Circuits. Electrical Circuits. Current Electricity: The flow of electric charges. Defined as the flow of positive charges Physically incorrect based on what we know about the atom. The Atom. Contains three sub-atomic particles

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Electricity

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  1. Electricity Electrical Circuits

  2. Electrical Circuits • Current Electricity: The flow of electric charges. • Defined as the flow of positive charges • Physically incorrectbased on what we know about the atom

  3. The Atom • Contains three sub-atomic particles • Protons (p+): Positively charged, inside the nucleus. • Neutrons (n0): No charge, inside the nucleus • Electrons (e-): Negatively charged, in shells outside the nucleus. • Since it requires a lot of energy to break a nucleus, protons cannot flow. • Electrons, in shells, can be removed easily. • Current electricity is physically the flow of electrons. Bohr-Rutherford Diagram of Lithium 3 p+ 4 n0

  4. Components of a Circuit • Every circuit is made up of four essential components: • Source: The source of electrical energy (electrons) • i.e: Battery, wall outlet • Load: Device which transforms electrical energy into something else. • i.e: Lightbulb, iPod, etc. • Switch: Device which controls electron flow • Conductor: Substance in which electrons can easily move. • i.e: Electrical wires

  5. Types of Circuits Series Parallel • One path for electrons to flow. • Multiple paths for electrons to flow. Lamp (bulb) Wire Cell (battery) Switch (open)

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