# Electricity Unit Chapter 12

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1. What is a Direct current (DC)
Current in which charged particles travel through a circuit in only one direction.
2. What is a Alternating current (AC)
A current in which electrons move back and forth in a circuit.
3. What is a Transformer
4. What is a Circuit breaker
A safetey device that is placed in series with other circuits that lead to appliances and outlets.
5. What is a Fuse
A safetey 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. What is Electrical power
The rate at which an appliance uses electrical energy.
7. What is a Watt (W)
8. What is a Kilo-watt (kW)
The practical unit of electrical power,1 kW = 1000 W
9. What is Electrical energy.
The energy that is used by an appliance at a given setting; is determined by by multiplying its now power rating by the length of time its used.
10. What is a Kilo-Watt hour
(kW∙h)
The practical unit of electrical energy.
11. What is an EnerGuide label
A label that gives detail about how much energy an appliance uses in one year of normal use.
12. What is a Smart meter
A meter that records total electrical energy used hour by hour and sends this information to the utility company automatically
13. What is Time of use pricing
A system of pricing in which the cost of each (kw h) of energy is used is different at different times of the day.
14. What is a Phantom load
The electricity that is consumed by an appliance or device when it is turned off.
15. What is a Efficiency
The ratio of useful energy output to total input, expressed as a percentage.
16. What is a Base load.
The continuous minimum demand for electrical power.
17. What is Hydroelectric power generator
Productions of electricity using a source of moving water.
18. What is a Intermediate load
A demand for electricity that is greater than the base load and is met by burning coal and natural gas.
19. What is a Peak load
The greatest demand for electricity, which is met by using hydroelectric power and natural gas.
20. What is Renewable energy source.
A source of energy that can be replaced in a relatively brief time period.
21. What is Non Renewable energy source
A source of energy that can not be replaced as fast as it is used up.
22. What is Solar energy
23. What is a Photovoltaic effect
The generation of a direct current when certian materials are exposed to light.
24. What is Biomass energy
Any organic materials that can be burned and used as a source of fuel.
 Author: Bigbang ID: 182397 Card Set: Electricity Unit Chapter 12 Updated: 2012-11-08 02:24:46 Tags: school chapter 12 Folders: Description: Chapter 12 definitions quiz Show Answers: