Chapter 2 Electricity!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Chapter 2 Electricity!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
2014-10-21 19:40:48

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  1. Electric Circuit
    a closed path where electrons powered can flow through

    Ex. Remember when we drew circuits in class, think of those
  2. Voltaic Cell
    source of energy that generates an electric current by chemical reactions involving, two different metals or metal compounds.

  3. Battery
    a connection of two or more cells

  4. Electrode
    one of two metal terminals in a cell or battery
  5. Electrolyte
    solution or paste that conducts a charge

    example: stuff in a the middle of the battery
  6. Dry Cell
    a cell that contains an electrolyte made of a paste

    example: Alkaline Batterys
  7. Wet Cell
    a cell that contains an liquid electrolyte 

    Example: All motorized vehicales batterys have wet cell batterys to create a spark to start up  cars
  8. Primary Cell
    cell that can be used only once

    Example: Duracell non rechargeable batterys
  9. Secondary Cell
    a cell that can be recharged

    Example: Cell phones,laptops,cameras,i pods
  10. Fuel Cell
    Cell that generates electricity through the chemical reactions of fuel that is stored outside of the cell.

  11. Solar Cell
    cell that converts sunlight into electrical energy

    Example: Solar Panels
  12. Terminal
    position on a cell that must connect to other components to from a circuit

    Example: a switch in a circuit
  13. Switch
    device that can complete or break a circuit to which its connected

  14. Open Circuit
    a circuit that contains a gap or break

    Example: Switch is open in a circuit
  15. Electric Current
    measure of number of charged particles that pass by a point in an electric circuit per second

    We measured current in class with a ammeter
  16. Coulomb (C)
    quantity of charge that is equal to the charge of 6.25 times 10 to the power of 18 electrons.
  17. Ampere (A)
    the unit of electric current, equivalent to one coulomb per second
  18. Electrical Resistence
    substance that hinders electric current and converts electrical energy to other forms.
  19. Resistor
    a device used in and electric circuit to decrease the current through a component by specific amount.
  20. Load
    a resistor of any device that converts energy to light,heat,sound,motion.

    Example: lamp
  21. Potential Difference (voltage)
    The difference between the electrical potential energy per unit of charge at two points in a circuit.
  22. Volt
    unit for potential difference

    on joule per coulomb
  23. Circuit Diagram
    a diagram with simple symbols to represent an electric circuit.

  24. Series Circuit
    when there is only one path for the elctrons to flow in a circuit.

    *Rember by thinking of the time taught the lesson by having people walk around class acting as electrons.
  25. Parallel Circuit
    a circuit in which there is more than one path along a circuit.

    *Rember by thinking of the time taught the lesson by having people walk around class acting as electrons.
  26. Ohm's Law
    the ratio of potential difference to current is a constant called resistence.

    Ohm is another scientist.
  27. Ohm
    the unit of resistance equivalent to one volt per ampere.
  28. Superconducter
    a material in which electric charge can flow with no resistence. 

    Example:Mercury is a superconductor
  29. Non-ohmic
    something that doesnt follow Ohm's Law
  30. Loads in series
  31. Loads in parallel