Chapter 11 glossary terms electricity unit

  1. Electric circuit
    A closed path along which electrons that are powered by an energy source can flow.

    e.g: A light bulb is a component that is powered by an electric circuit.
  2. Voltaic cell
    A source of energy that generates electric current  by chemical reactions involving two different metals or metal compounds separated by a solution that is a conductor.

    e.g: A light bulb
  3. Battery
    A connection of two or more cells.
  4. Electrode
    One of two metal terminals in a cell or battery.

    e.g: positive terminal, negative terminal
  5. Electrolyte
    A solution or paste that conducts charge.

    e.g: moist paste in a cell (battery)
  6. Dry cell
    A cell that contains an electrolyte that is a paste.
  7. Wet cell
    A cell that contains a liquid electrolyte.
  8. Primary cell
    A cell that can only be used once.

    e.g: a AA battery
  9. Secondary cell
    A cell that can be recharged.

    e.g: a cell phone
  10. Fuel cell
    A cell that generates electricity through the chemical reactions of fuel that is stored outside the cell.

    e.g: a fuel cell car
  11. Solar cell
    A cell that converts sunlight into electrical energy.

    e.g: a solar panel
  12. Terminal
    Location on a cell that must be connected to other components to form a circuit.

    e.g: a positive terminal and a negative terminal
  13. Switch
    A control device that can complete or break the circuit it is connected to.

    e.g: a light switch
  14. Open circuit
    A circuit that contains a gap or break.
  15. Electric current
    The rate of movement of electric charge

    e.g: Amperes
  16. Coulomb (C)
    The quantity of charge equal to the charge of 6.25x10^18.
  17. Ampere (A)
    The unit of electric current, equivalent to one coulomb per second.
  18. Electrical resistance
    The property of a substance that hinders electric current and converts electrical energy to other forms of energy.
  19. Resistor
    a device used in an electric circuit to decrease the current through a component by a specific amount.
  20. Load
    A resistor or any other device that transforms electrical energy into heat, motion, sound, or light.

    e.g: a microwave
  21. Potential difference
    (voltage) The difference between the electric potential energy per unit of charge at two points in a circuit.
  22. Volt
    The unit for potential difference, equivalent to one joule (J) per coulomb (C).
  23. Circuit diagram
    A diagram that uses standard symbols to represent the components in an electric circuit and their connections.
  24. Series circuit
    A circuit in which there is only one path along which electrons can flow.
  25. Parallel circuit
    A circuit in which there is more than one path for electrons to flow.
  26. Ohm’s law
    The ratio of potential difference to current is a constant called resistance.
  27. Ohm (Ω)
    The unit for resistance, equivalent to one volt per ampere (V/A)
  28. Superconductor
    A material through which electric charge can flow with no resistance.

    e.g: aluminum
  29. Non-ohmic
    Not following Ohm’s law.
Card Set
Chapter 11 glossary terms electricity unit
chapter 11