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Grades 11 and 12 - Physics - Senior High School - Everyday Electrical Transfers
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Grades 11 and 12 - Physics - Senior High School - Everyday Electrical Transfers
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10 Questions

1. Energy can be transferred usefully, stored or dissipated, but cannot be created or destroyed. In the context of the above sentence, dissipated means what?
2. Which of the following represents the energy transfers in a food mixer?
3. What are the alternative names of the energy of movement, thermal energy and radiant energy which are all types of energy that are transferred from electrical energy by domestic appliances?
4. What are the two most common forms of waste energy?
5. A wind-up radio was invented to help people living in communities where it is not always possible to buy batteries. Which of the following represent the main energy changes in such a device?
6. An air source heat pump is an electrically powered device that recovers heat energy from the air. For every kilowatt of electrical energy used, it provides three kilowatts of heat energy. Some homes are heated using a heat pump. Which of the following is not an advantage of using such an appliance when compared with the alternative of using a fossil fuel powered boiler?
7. When energy has been dissipated, it:
8. What is the energy transfer that an electric guitar is designed to make?
9. Digital mp3 players have almost completely replaced portable CD players. When you compare the energy transfers, which of the following types of energy is found in one but not the other?
10. In developing countries, many homes do not yet have a source of mains electricity and need to rely on batteries. Batteries store which type of energy?

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