Chapter 12 electricity flash cards

  1. Direct current(DC)
    Currernt in which charge particles travel through a circuit in only one direction
  2. Alternating current(AC)
    A current in which particles move back and forth in a circuit
  3. Transformer
    Not a robot that tries to save or destroy the earth but an electrical device that changes the size of the potential difference of an alternating current
  4. Circuit breaker
    A saftey device that is placed in series with other circuits that lead to appliances and outlets
  5. Fuse
    A saftey device that is found in older buildings and some appliances;like a circuit breaker,it is placed in series with other circuits that lead to appliances and outlets
  6. Electrical power
    The rate at which an appliance uses electrical energy
  7. Watt(W)
    A unit of electrical power; 1 killowatt=1000W
  8. Kilowatt
    A particle unit of electrical power; 1kw=1000W
  9. Electrical energy
    The energy that is used by an appliance at a given setting; is determinded by multiplying its power rating by lenghth of time used
  10. Kilowatt-hours(kW.h)
    The particle unit of electrical energy
  11. EnerGuide label
    A label tahat gives details about how much energy an appliance uses in one year of normal use
  12. Smart meter
    A meter that records he total electrical energy usedĀ  hour by hour and sends thisĀ information to the utility company automatically
  13. Time of use pricing
    A system of pricing in which the cost of each kW.h of energy used is different at different times of the day
  14. Phantom load
    The electricity that is consumed by an appilance or device when it is turned off
  15. Efficency
    The ratio of useful energy output ,expressed as a percentage
  16. Base load
    The countinuous minimum demand for electrical power
  17. Hydroelectric power generator(The tounge twister)
    The production of electricity using a source of moving water
  18. Intermidiate load
    A demand for electricity that is greater than the base load and is met by burning fossil fuels and natural gas
  19. Peak load
    The greatest demand for electricity ,which is met by using hydroelectricity power and natural gas
  20. Renewable energy source
    A source of energy that can be replaced in a relativley breif period of time
  21. Non-renewable energy source
    A source of energy that cannot be replaced as quickley as it is used
  22. Solar energy
    Energy that is directley converted from the energy of the sun into electicity
  23. Photovoltaic effect
    The generation of a direct current when certain materials are exposed
  24. Biomass energy
    Energy that is generated from plant and animal matter
Card Set
Chapter 12 electricity flash cards
Chapter 12 electricity flash cards