CH 12 ELECTRICTIY

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Author:
jessica_h
ID:
310690
Filename:
CH 12 ELECTRICTIY
Updated:
2015-10-31 14:23:50
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ELE
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ELE
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  1. Direct current
    Current in which charged particles travel through in only one direction
  2. alternating current
    current in which electrons move back and forth in a circuit
  3. transformer
    an electrical device that changes the size of the potential difference of an alternating current
  4. circuit breaker
    a safety device that is placed in series with other circuits, which lead to appliances and outlets
  5. fuse
    same as circuit breaker but found in older buildings and some appliances
  6. electrical power
    the rate in which an appliance uses electrical energy
  7. watt
    a unit of electrical power
  8. kilowatt
    a practical unit of electrical power 1kw=1000w
  9. electrical energy
    the energy that is used by an appliance at a given setting; determined by multiplying power rating of an appliance by the length of time it is used
  10. kilowatt-hour
    the practical unit of electrical energy
  11. energuide label
    a label that gives details about how much energy an appliance uses in one year of normal use
  12. smart meter
    a meter that records the total electrical energy used hour by hour and sends this 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 appliance or device that is used when it is turned off
  15. efficiency
    the ratio of useful energy output to total energy output, expressed as a percentage
  16. base load
    the continuous minimum demand of electrical power
  17. hydroelectric power generator
    the generation of electrical power using a source of moving water
  18. renewable energy source
    a source of energy that can be replaced in relativity short period of time
  19. non-renewable energy source
    a source of energy that cannot be replaced as quickly as it is used
  20. intermediate load
    a demand for electricity that is greater than the base load and is met by burning coal and natural gas
  21. peak load
    the greatest demand of electricity, which is met by using hydroelectric power and natural gas
  22. wind farm
    many large wind turbines at one location
  23. solar energy
    energy that is directly converted from the sun into electricity
  24. photovoltaic effect
    the generation of direct current when certain materials are exposed to light
  25. biomass energy
    energy that is generated from plant and animal matter

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