Sustainable Energy

Topics: Electromagnetism, Lighting, Energy development Pages: 2 (562 words) Published: May 26, 2013
Sustainable Energy
1. How can electricity be defined?
Electricity can be defined as the flow of electrical power or charge. It is a type of energy fuelled by the flow of electrons from positive and negative points within a conductor. 2. What is an electrical circuit?

3. What components are required to create an electrical circuit? In order to create an electrical circuit, you need:
a) A source of electric power (battery or generator)
b) A load to absorb the power (lamp, motor, LED light, etc.) c) Wiring to connect the load to the power source
d) A control device (switch, circuit breaker or fuse)
4. List the five major sources of electricity (power generation) used in Ontario. 1) Nuclear
2) Coal and Oil
3) Natural Gas
4) Water Power (Hydroelectricity)
5) Wind, Solar, Biomass
5. What time of day is “Peak Demand” for electricity in Ontario? What is the cost difference for electricity during on peak times and off peak times? Ontario’s “Peak Demand” for electricity usually occurs on hot summer days when air conditioners are running full tilt. Demand is generally at its highest between 11 am and 5 pm. On winter weekdays, the “Peak Demand” for electricity in Ontario occurs between 7 am and 11 am and between 5 pm and 7 pm. Energy prices peak twice- in the early morning and in the evening- mainly due to space heating in addition to increased lighting and appliance use. The cost of electricity during on peak times is approximately twice as much as during off peak times. According to the Ontario Ministry of Energy, the current rate per kilowatt hour for off peak times is 6.3¢ while it costs 11.8¢ during on peak times- nearly twice the price. 6. What can you do to reduce your electrical consumption? There are multiple ways through which people can reduce electrical consumption. To illustrate: * Switch off your home appliances when they are not in use and try to select the most energy-efficient models when...
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